Provided is a rotary machine having exceptional space-saving properties despite being provided with a reduction gear. This rotary machine (1) comprises a first output shaft (10), a cylindrical shaft (20) surrounding the first output shaft (10), a reduction gear (60) connected to the shaft (20), a rotor (30) fixed to the shaft (20), a stator (40) surrounding the rotor (30), a housing (50) supporting the stator (40), and a first bearing (71), the first output shaft (10) being connected to the reduction gear (60) either directly or via a member, and the outer peripheral surface of the shaft (20) and an inner peripheral portion (54) of the housing (50) being linked via the first bearing (71).
A heart rate acquisition device (30), which acquires the heart rate of a subject (S) on a bed (BD), comprises: a heartbeat waveform acquisition unit (31) that, on the basis of the outputs of load detectors (11, 12, 13, 14) provided in the bed, acquires a heartbeat waveform indicating temporal variations of load values corresponding to the heartbeat of the subject; a heartbeat period estimation unit (33) that determines an estimated value of the heartbeat period of the subject on the basis of transition of the heartbeat waveform; and a heart rate calculation unit (34) that calculates the heart rate of the subject on the basis of the heartbeat waveform and the estimated value.
A motor (1) comprises: a shaft (40); cylinders (5a, 5b) rotatably supported on the shaft (40); an impeller (20) fixed to the cylinders (5a, 5b); a rotor (30) fixed to the impeller (20); a stator (90) surrounding the rotor (30); spaces (91) between the shaft (40) and the cylinders (5a, 5b); and a space (92) between the rotor (30) and the stator (90). The spaces (91, 92) are spaces into which a liquid enters, a plurality of first grooves (59) are formed in at least either of an inner surface (54) of the cylinders (5a, 5b) or an outer surface (32) of the shaft (40), and a plurality of second grooves (69) are formed in at least either of an inner surface (63) of the stator (90) or an outer surface (32) of the rotor (30).
The present invention provides a power supply system, a power supply device, and a power supply method with which it is possible to quickly set a phase capable of increasing the received power of a power-receiving device. This power supply device comprises: a first power transmission control unit that controls the phase of power transmission signals of a plurality of first antennas positioned around a first power-receiving device among a plurality of antennas capable of transmitting power; and a second power transmission control unit that controls the phase of power transmission signals of one or a plurality of second antennas other than the plurality of first antennas among the plurality of antennas. The first power transmission control unit changes in time series the phases of the power transmission signals of the plurality of first antennas while maintaining the phase relationship of the power transmission signals of the plurality of first antennas so that the phases of the signals received by the first power-receiving device from the plurality of first antennas are aligned, and the second power transmission control unit changes in time series the phases of the power transmission signals transmitted to the one or a plurality of second power-receiving devices by the one or a plurality of second antennas.
H02J 50/80 - Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
H01Q 3/30 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase
H01Q 21/06 - Arrays of individually energised antenna units similarly polarised and spaced apart
H02J 50/20 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
H02J 50/40 - Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
H02J 50/90 - Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
Provided is a ball bearing that can prevent the vibration of a retainer while preventing the deformation of the retainer in a harmonic drive gear device. This ball bearing (1) comprises: a deformable inner ring (2); a deformable outer ring (3) that is installed outside the inner ring (2); a plurality of spherical rolling elements (4) that are provided between the inner ring (2) and the outer ring (3); and a retainer (5) in which a plurality of pockets (10) are circumferentially provided at intervals therebetween, the plurality of rolling elements (4) being respectively accommodated in the pockets (10). Each of the plurality of pockets (10) has a pocket surface (11) that spreads around a pocket axis (x1) that extends in a radial direction, and a flange section (20) that protrudes toward the pocket axis (x1) from the pocket surface (11). The pocket surfaces (11) are formed so as to accommodate the rolling elements (4) with an interval therebetween, and the flange section (20) is formed so as to be in contact with at least the rolling elements (4) located at the position of the minor radius (rb) of the inner ring (2), from inside in the radial direction.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
[Problem] To provide a rotor which is for a resolver and is capable of suppressing the non-uniform deformation of a protruding section when pressing a rotary shaft into the rotor. [Solution] This rotor 10 for a resolver is fixed to a shaft 20 by pressing a shaft 20 of a motor into a substantially circular hole 12. Two protruding sections 11 protruding radially outward at equal circumferential intervals are provided to an outer surface of the rotor 10, a protruding section 13 which is located in a substantially center section in the circumferential direction of the protruding section 11 and protrudes toward the center of the hole 12 is provided to an inner circumferential surface 12 of the rotor 10, and a recess section 15 recessed to the radially outer side is provided at the substantially center section in the circumferential direction of the protruding section 11 180° opposite to the protruding section 13.
Provided is a power transmission system that enables a reduction in costs related to unnecessary communication devices and in unnecessary power consumption, the power transmission system thus affording excellent power savings. The power transmission system comprises: a microwave contactless power feed device that feeds power to a secondary battery by propagating microwaves in a contactless state. The microwave contactless power feed device includes: a power transmitter that transmits microwaves; and a power receiver that receives the microwaves transmitted from the power transmitter. The power receiver includes: a detection unit that detects a power storage state of the secondary battery; and a reporting unit that uses wireless communication to report, to the power transmitter, the detection results of the detection unit. The detection unit and the reporting unit are provided midway along a transmission path to the secondary battery. The power transmitter includes a determination unit that determines whether power can be transmitted on the basis of the detection result of the detection unit as reported by the reporting unit.
H02J 50/80 - Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 7/34 - Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
H02J 50/20 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
Provided is a power transmission system with which it is not necessary to, for example, replace the batteries in an electronic lock, which is low cost, for which maintenance is not required, and with which an electronic lock can be sufficiently driven. The power transmission system comprises a microwave contactless power supplying device: that is disposed so as to be divided between a door provided with an electronic lock, and the inside/outside of a partition unit provided with the door; and that supplies power to the electronic lock by propagating microwaves in a contactless manner from the partition unit toward the door.
E05B 49/00 - Electric permutation locks; Circuits therefor
H02J 50/20 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
H02J 50/80 - Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
9.
POWER RECEIVING MACHINE AND POWER TRANSMISSION SYSTEM
Provided are a power receiving machine that can synthesize the outputs of two or more power receiving units and can increase the power supply voltage thereof and a power transmission system. The power receiving machine is a microwave power transmitting/receiving machine that receives a microwave from the power transmission side in a non-contact state and comprises power receiving units having an antenna and a half-wave voltage doubler rectifier circuit, wherein two or more power receiving units are connected.
H02J 50/27 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves characterised by the type of receiving antennas, e.g. rectennas
E05B 47/00 - Operating or controlling locks or other fastening devices by electric or magnetic means
E05B 49/00 - Electric permutation locks; Circuits therefor
The purpose of the present invention is to provide a motor that is appropriately molded. This motor (1) comprises a stator (20), a substrate (30) that is supported by the stator (20), and a resin member (50) that covers the stator (20). In the axial direction, the substrate (30) is provided with a first surface (30F) that faces the stator (20), and a second surface (30S) that is on the opposite side from the first surface (30F). The first surface (30F) of the substrate (30) is in contact with the resin member (50). The second surface (30S) of the substrate (30) is provided with an inner circumferential portion (30i), an outer circumferential portion (30o), and a middle portion (30m) that is located between the inner circumferential portion (30i) and the outer circumferential portion (30o). At least one electrically conductive pad (40) is provided to the middle portion (30m), and a recess (45) that surrounds the pad (40) is formed in the middle portion (30m). A radial-direction end portion of the recess (45) is formed further toward the radially outer side (d) than the inner circumferential portion (30i) and further toward the radially inner side (c) than the outer circumferential portion (30o).
Provided are: a stator that enables, with a simple configuration, winding disturbance of a coil to be suppressed; and a motor that uses the stator. This stator (4) comprises: a core (41) equipped with a plurality of magnetic pole parts extending in a radial direction cd; a plurality of insulators (45) corresponding to the plurality of magnetic pole parts (41c); and a ring (7, 8). The plurality of insulators (45) are each equipped with a connected part. The ring (7, 8) is equipped with a plurality of connecting parts. The connected parts of the plurality of insulators (45) and the plurality of connecting parts are connected to each other. Furthermore, one aspect of this motor (1) comprises: the stator (4); and a housing (5) that accommodates the stator (4). An inner circumferential surface (51a') of the housing (5) and an outer circumferential surface (71a) of the ring (7) are fixed. Another aspect of this motor (1) comprises: the stator (4); and a housing (5) that has a first tubular section (51a) and a second tubular section (51b) which accommodate the stator (4). An inner circumferential surface (51b') of the second tubular section (51b) and an outer circumferential surface (82c) of the ring (8) are fixed.
Provided is a motor capable of achieving space saving within the motor with a simple structure. A motor (10) comprises: a plurality of rings (70A to 70F) formed of a conductive material and stacked in the rotational axis direction; and a stator (30) having a plurality of coils (32). The plurality of rings (70A to 70F) each comprises an external connection terminal (73) electrically connected to an external device and internal connection terminals (72) electrically connected to the plurality of coils (32), wherein, in the radial direction, the external connection terminal (73) is disposed on the inner circumferential side with respect to the internal connection terminals (72).
This ring-shaped magnetic encoder is acquired by mixing a rare earth magnet powder and a resin, compressing the mixture to make an unheated body, and then heat-curing the resin included in the unheated body to make a heat-cured body, and comprises a magnetic track in which magnetic poles different from each other are magnetized at a prescribed pole pitch along the circumferential direction. When the thickness of the unheated body is denoted by T (mm), the maximum particle size of the rare earth magnet powder is denoted by G (μm), and a ratio R is defined as T/G, the ratio R is 6.67 or more, and the particle size of the rare earth magnet powder is 45-150 μm.
G01D 5/245 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
Provided is a technique for achieving a compact motor size in the axial direction. This stator comprises: a plurality of coil groups (40A, 40B, 50A, 50B, 60A, 60B) aligned in an annular shape; and a substrate (70) provided on one side of the coil groups along the axis and having a plurality of wiring layers. The coil groups (40A, 40B) are provided with a first coil group (40A, 40B), a second coil group (50A, 50B), and a third coil group (60A, 60B) in this order in a round direction (R1). The energization direction of the first coil group (40A, 40B) is different from those of the second coil group (50A, 50B) and the third coil group (60A, 60B). In the first coil group (40A, 40B), the first end portions (U3, U21) of a second coil (42) and the first end portions (U5, U23) of a third coil (43) are electrically connected to each other by a wiring layer (75), and the second end portions (U2, U20) of a first coil (41) and the second end portions (U4, U22) of the second coil (42) are electrically connected to each other by a wiring layer (74).
Provided is an antenna device capable of easily calculating phase adjustment amounts of power transmission signals in a plurality of antenna elements of an array antenna in accordance with the position of a power reception antenna, in order to increase received power. This antenna device: acquires a projection elevation angle; determines, on the basis of the coordinates of first both end points and second both end points in a marker image and a focal distance of a fisheye lens, second elevation angles of the first both end points and the second both end points with respect to a third axis; determines a first distance between the marker center point and the fisheye lens; determines second distances between the fisheye lens and the first both end points and between the fisheye lens and the second both end points on the basis of the second elevation angles of the first both end points and the second both end points with respect to the third axis and third axial coordinates thereof; sets phase adjustment amounts for three antenna elements in each of a first axial direction and a second axial direction on the basis of the route differences between the first distance and the second distances; and sets phase adjustment amounts for a plurality of antenna elements arranged in a two-dimensional manner using parabolic interpolation of a quadratic function.
H02J 50/23 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves characterised by the type of transmitting antennas, e.g. directional array antennas or Yagi antennas
H01Q 3/30 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase
H01Q 13/08 - Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
H01Q 21/06 - Arrays of individually energised antenna units similarly polarised and spaced apart
The present invention increases the coaxiality of a motor, for example. A motor (100) comprises, for example: a shaft (S); a magnet (112, 212); a coil (120); a first bearing (113a) arranged on one end (S1) side of the shaft (S) in the axial direction; a second bearing (113b) arranged on the other end (S2) side of the shaft (S) in the axial direction; a cover (114, 414) fixed to the second bearing (113b) and arranged inside the coil (120) in the radial direction; a holder (115, 415) fixed to the first bearing (113a); and an elastic member (116, 416) held by the holder (115, 415), the elastic member (116, 416) being arranged between the cover (114, 414) and the holder(115, 415) in the longitudinal direction of the shaft (S).
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 15/16 - Centering rotors within the stator; Balancing rotors
17.
CONTROL DEVICE, GRIPPING MEMBER, AND ESTIMATION SYSTEM
In the present invention, a user's health is estimated on the basis of the user's daily activities. A server 20 includes: a control unit 25 that acquires, from an acceleration sensor 13 that is provided to a gripping member 11 which is a member to be gripped by the user, first measurement values which were measured by the acceleration sensor 13 and which are related to the shaking of the user's hand; and an estimation unit 22 that estimates the user's health on the basis of the first measurement values.
A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
A61B 5/1172 - Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
A61B 10/00 - Other methods or instruments for diagnosis, e.g. for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
The present invention addresses the problem of providing a thrust bearing that suppresses flexure of a cover during crimping and makes it possible to accurately set a gap between the cover and bearing washers. A thrust bearing (1) comprises a cover (40) that is arranged so as to cover the outer circumferential surfaces of a first bearing washer (10) and a second bearing washer and holds the first bearing washer (10) and the second bearing washer in the axial direction. The cover (40) has a cylindrical part (41) that is opposite the outer circumferential surfaces of the first bearing washer (10) and the second bearing washer and, at at least one end of the cylindrical part (41) in the axial direction, a bent part (42) that is bent relative to the cylindrical part (41) around the entire circumference. A chamfered part (12) is formed at a corner of the outer circumferential surface of at least one of the first bearing washer (10) and the second bearing washer. The chamfered part (12) is opposite the bent part (42) of the cover (40). The problem described above is addressed by forming a circumferential groove (44) around the entire circumference of an inner circumferential surface at the boundary between the cylindrical part (41) and the bent part (42).
F16C 19/10 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
A planar illumination device (1) according to an embodiment comprises a substrate (3), a plurality of light sources (4) in a first group, and one or more light sources (5) in a second group. Prescribed electrical wiring is applied to the substrate (3). The plurality of light sources (4) in the first group are disposed across substantially the entire surface of the substrate (3). The one or more light sources (5) in the second group are disposed adjacent to the plurality of light sources (4) in the first group within a prescribed region on the substrate (3).
This door latch device (5) comprises: a latch mechanism (11) that switches between a latched state in which a striker is held and a released state in which the striker is disengaged; an electric release mechanism (12) for using driving force generated by a first electric motor (21) to switch from the latched state to the released state; a manual release mechanism (13) for transmitting to the latch mechanism (11) an operation force that is input to an operation member (6) provided in a door (1), and thereby switching the latch mechanism (11) from the latched state to the released state; and a lock mechanism (14) that switches between a locked state in which switching to the released state by means of the manual release mechanism (13) is prohibited and an unlocked state in which switching to the released state by means of the manual release mechanism (13) is allowed. The lock mechanism (14) has a second electric motor (22), and operates solely on the basis of driving force generated by the second electric motor (22).
E05B 77/02 - Vehicle locks characterised by special functions or purposes for accident situations
E05B 77/24 - Functions related to actuation of locks from the passenger compartment of the vehicle preventing use of an inner door handle, sill button, lock knob or the like
E05B 81/16 - Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on locking elements for locking or unlocking action
Provided is a non-contact tactile sense presentation device including: a movable body having a magnet; an elastic part that supports the movable body so as to freely vibrate; a fixed body that generates a magnetic field when a current at a frequency equal to the resonance frequency of the movable body is supplied thereto and that has a coil for vibrating the movable body due to electromagnetic interaction with the magnet; and a fluid discharge part that has a chamber portion, which stores a fluid therein and which has a diaphragm that allows the fluid in the chamber portion to come out and come in according to deformation of the diaphragm caused by a resonant vibration of the movable body, and that presents a tactile sense by means of the fluid coming out from the chamber portion.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
A planar illuminating device (1) of an embodiment is a directly-under type planar illuminating device (1) provided with a linear Fresnel lens (6a), and comprises a plurality of light sources (4), and a reflector (5). The plurality of light sources (4) are disposed in a linear fashion on a board (3), along condensing positions of the Fresnel lens (6a). The reflector (5) includes reflecting surfaces (5c to 5f) constituting segments surrounding each of the light sources (4). In a part in which the light sources (4) cannot be disposed along the condensing position because a planar shape of a light emitting area of the planar illuminating device (1) is an irregular shape that is not rectangular, the segment of the reflector (5) adjacent to said part is expanded to an outer edge side of the planar illuminating device (1).
F21S 2/00 - Systems of lighting devices, not provided for in main groups or , e.g. of modular construction
F21V 5/04 - Refractors for light sources of lens shape
F21Y 105/16 - Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array square or rectangular, e.g. for light panels
Provided is a motor that exhibits increased rigidity during rotation of a rotor. A motor (200) of the present invention comprises a shaft (101), a stator (130), a bearing (111) disposed between the shaft (101) and the stator (130), and a rotor (120) which rotates together with the shaft (101). The rotor (120) includes a magnet (122) and a cover (129) which is fixed to the shaft (101) and covers the magnet (122). The cover (129) includes a protruding portion (125) protruding in the axial direction toward the bearing (111), and an arm portion (126) protruding in the axial direction from the protruding portion (125) toward the bearing (111).
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
The purpose of the present invention is to provide a motor, the efficiency of which can be improved while ensuring the strength of the core. The stator core (37) of a motor (1) comprises an annular portion (31) and a plurality of projection portions (32) radially extending from the annular portion (31). An inside magnetic body (92) that forms the inside of the plurality of projection portions (32) and an outside magnetic body (91) that forms an outer peripheral portion surrounding the inside of the plurality of projection portions (32) are different from each other. A member that forms the inside of the plurality of projection portions (32) is the plurality of inside magnetic bodies (92) laminated in the axial direction of the motor (1), and a member that forms the outer peripheral portion surrounding the inside of the plurality of projection portions (32) is the plurality of outside magnetic bodies (91) laminated in the axial direction. In the axial direction, the thickness of each of the plurality of inside magnetic bodies (92) is thinner than the thickness of each of the plurality of outside magnetic bodies (91).
This strain gauge has a substrate and a resistor that is formed on the substrate. The resistor is formed of a material containing Cr as the main component. The thickness of the resistor is at least 200 nm so that the lateral sensitivity ratio of the resistor is at most 70% and the gauge rate of the resistor is at least 5.
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
26.
MOTOR DRIVE CONTROL DEVICE, MOTOR UNIT, AND MOTOR DRIVE CONTROL METHOD
The present invention achieves both a shortened activation time and post-activation vibration improvement. A motor drive control device (10) comprises a control circuit unit (3) that outputs a drive control signal (Sd) to a motor drive unit (2) for selectively energizing three phase coils (Lu, Lv, Lw) of a motor (20), thereby switching, in a prescribed order, energization patterns of the three phase coils (Lu, Lv, Lw) energized by the motor drive unit (2). The control circuit unit (3) includes: an energization-switching-signal generation unit (35) that generates an energization switching signal (S6) for switching the energization patterns of the three phase coils (Lu, Lv, Lw) of the motor (20) in accordance with a rotation state of the motor (20) at a timing determined on the basis of the 180° section or the 360° section of a position detection signal (Shu); and a drive-control-signal generation unit (33) that switches the energization patterns on the basis of the energization switching signal (S6) so as to generate, as the drive control signal (Sd), a PWM signal (S4) for performing sine wave driving of the motor (20).
The present invention reduces rotation speed fluctuation associated with phase adjustment. A motor drive control device (1) comprises: a control circuit (2) that generates a drive control signal (Sd) which is a PWM signal for controlling drive of a motor (5) having a coil of at least one phase; and a motor drive unit (3) that outputs a drive signal to the motor (5) in accordance with the drive control signal (Sd). The control circuit (2) is provided with: a phase adjustment control unit (20) that determines, on the basis of the phase difference between an induction voltage in a coil of a prescribed phase of the motor (5) and a coil current of the prescribed phase, a phase adjustment amount (S2) obtained by advance control or delay control for the coil current; a PWM duty adjustment unit (30) that determines, in accordance with the phase adjustment amount (S2) determined by the phase adjustment control unit (20), a PWM duty adjustment amount (Sa) for adjusting the PWM duty of a PWM signal; and a drive control signal generation unit (40) that generates the drive control signal (Sd) on the basis of a drive command signal (Sc) from the outside, the phase adjustment amount (S2), and the PWM duty adjustment amount (Sa).
This strain gauge comprises a substrate and a resistor that is formed on the substrate. The resistor is formed from a material containing Cr as the main component. The line width W and thickness T of the resistor have a relationship that satisfies formula (1) so that the transverse sensitivity ratio of the gauge is at most 70% and the gauge factor of the gauge is at least 5. (1): w ≤ 0.0177t2 + 0.1521t + 2.9541 (in formula (1), w = logW and t = logT)
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
The purpose of the present invention is to provide a material testing machine in which the effect of noise can be reduced. A material testing machine (1, 2) comprises a measurement unit (22, 142) that converts a force applied to a test object (100) to an electrical signal, and an amplification conversion unit (23, 159) that includes an amplifier (24, 154) for amplifying the electrical signal and an AD converter (25, 155) for digitizing the electrical signal amplified by the amplifier (24, 154), the amplification conversion unit (23, 159) being configured so as to be integrated with the measurement unit (22, 142), or being configured so as to be separate from the measurement unit (22, 142) and being arranged in the vicinity of the measurement unit (22, 142).
[Problem] To reduce magnetic flux interlinking with stator windings by effectively shielding magnetic flux that is generated by a rotating electrical machine. [Solution] Provided is a stator 100 of a resolver 1, comprising: a stator core 110 including a core back portion 111, and teeth 112 extending radially inward from a peripheral edge of the core back portion 111; an insulator 120 provided on the stator core 110; stator windings 130 wound around the teeth 112 via the insulator 120; and a shield 160 having an annular shape and covering a motor side of the stator core 110. The insulator 160 includes a winding portion that is attached to the teeth 112, and a flange portion 125 extending radially outward from the winding portion. The shield 160 includes a first annular portion 161 that covers the core back portion 111, and a second annular portion 164 that covers the stator windings 130. The flange portion 125 is interposed between the core back portion 111 and the first annular portion 161.
H02K 11/01 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields
A sterilization system according to an embodiment comprises a plurality of sterilization devices (1), each of which includes a light source unit (21), a horizontal angle adjustment unit (4) and/or a vertical angle adjustment unit (3), and a control device (5). The light source unit (21) emits an ultraviolet ray at a wavelength that has little effect on the human body. The horizontal angle adjustment unit (4) adjusts a horizontal angle of the light source unit (21) by turning the light source unit (21) with respect to the horizontal direction. The vertical angle adjustment unit (3) adjusts a vertical angle of the light source unit (21) by turning the light source unit (21) with respect to the vertical direction. The control device (5) controls the turning of the horizontal angle adjustment unit (4) and/or the vertical angle adjustment unit (3), and irradiates an object with the ultraviolet ray by means of the light source unit (21). Each of the control devices (5) controls the turning of the horizontal angle adjustment unit (4) and/or the vertical angle adjustment unit (3) on the basis of setting data including an irradiation direction for irradiating the ultraviolet ray onto the same object at the same time, and controls the irradiation of the ultraviolet ray on the basis of a control value of an exposure amount of the ultraviolet ray amount, which has been adjusted with a value based on the number of the plurality of sterilization devices (1) that irradiate the same object with the ultraviolet rays.
This strain gauge has a substrate and a resistor that is formed on the substrate, the resistor being formed from a material containing Cr as a main component, and the line width of the resistor being 70 μm or lower so that the lateral sensitivity ratio is equal to or less than 70% and the gauge rate is 5 or greater.
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
21414B compound, the easy axis of magnetization thereof is aligned with the short axis direction of crystal grains of the main phase, the thickness in the direction of the easy axis of magnetization is 0.07-0.2 mm, and the rate of reduction of residual magnetization is not more than 5% (where the rate (%) of reduction of the residual magnetization is the ratio of reduction of residual magnetization with respect to 100%, given that 100% is the residual magnetization when the thickness of the rare earth magnet is 0.5 mm).
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
34.
ADJUSTMENT METHOD FOR PULSE WAVE MEASURING DEVICE, PULSE WAVE MEASURING SYSTEM, AND PULSE WAVE MEASURING DEVICE
The present invention pertains to an adjustment method for a pulse wave measuring device that can be mounted on a wrist of a user. The pulse wave measuring device comprises: a pulse wave sensor that is equipped with a strain gauge and acquires pulse waves by measuring the pulse at a radial artery; a pressing means that presses the pulse wave sensor against the radial artery; and an output unit that outputs a measurement value of the pulse wave sensor in the form of a digital signal. The adjustment method comprises: a step for acquiring pulse waves by means of the pulse wave sensor when the pulse wave measuring device is mounted on a user's wrist and outputting the acquired measurement value in the form of a digital signal; a step for comparing the voltage level of the digital signal with a range that has been preset with respect to a maximum voltage level for the output unit; and a step for adjusting or designating a pressing force to be applied to the pulse wave sensor in the case when the voltage level of the digital signal falls outside said preset range.
A61B 5/02 - Measuring pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography; Heart catheters for measuring blood pressure
The purpose of the present invention is to reduce the size of rotary equipment or a detection device. This rotary equipment (detection device) (1) has a case (10), a shaft (20) supported so as to be rotatable with respect to the case (10), and a detection unit (50) disposed on the outer surface (11a) or the inner surface (11b) of the case (10). The case (10) is provided with a first case member (11), a second case member (12), and a connecting part (13) connecting the first case member (11) and the second case member (12). The detection unit (50) is disposed between the shaft (20) and the connecting part (13).
G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
36.
MOTOR DRIVE CONTROL DEVICE, MOTOR CONTROL CIRCUIT, AND MOTOR DRIVE CONTROL METHOD
This motor drive control device measures the performance affecting parameters of a motor while taking the currents of two-phase coils, although having a simple circuit configuration. A control circuit unit (4) of a motor drive control device (1) performs control calculation processing of a motor (20) in a half-cycle of each of continuous two PWM cycles and obtains, in the remaining two half-cycles in which the control calculation processing in the continuous two PWM cycles is not performed, a first current detection result and a second current detection result that are the currents of the two-phase coils of three-phase coils obtained from a current detection circuit (2c) and a performance affecting parameter detection result obtained from a performance affecting parameter detection unit.
H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
Provided is a sensor device with a simple configuration. A sensor device (1, 100, 200) comprises: a shaft (S), a bearing (20) directly or indirectly disposed on the shaft (S); and a holder (10, 210) disposed on the bearing (20). The holder (10, 210) includes: an inner circumferential member (11); an outer circumferential member (12, 212); a connecting portion (13) that connects the inner circumferential member (11) and the outer circumferential member (12, 212); and a first strain sensor (16) disposed on the connecting portion (13). In the radial direction, the inner circumferential member (11) is disposed outside of the bearing (20), and the connecting portion (13) rotatably supports the inner circumferential member (11) relative to the outer circumferential member (12, 212).
G01L 5/1627 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of strain gauges
38.
R-T-B-BASED SINTERED MAGNET AND METHOD FOR PRODUCING SAME
This R-T-B-based sintered magnet (R represents a rare earth element including Nd, and T represents a transition metal element including Fe) comprises, as a rare earth element, at least dysprosium (Dy). When the value of saturation remnant magnetization of the R-T-B-based sintered magnet is noted as B, and the value of magnetization indicated by an initial magnetization curve when an external magnetic field of 500 kA/m is applied to the R-T-B-based sintered magnet is noted as A, the magnetization ratio A/B is smaller than 1.0 (but greater than 0) and the pole pitch in the R-T-B-based sintered magnet is less than 4 mm (but greater than 0 mm).
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
C22C 33/02 - Making ferrous alloys by powder metallurgy
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
H01F 13/00 - Apparatus or processes for magnetising or demagnetising
This vibration actuator has: a movable stacked body including a magnet and a pair of yokes which are respectively fixed to the front surface and the rear surface of the magnet and have openings in the center; a fixed body which has a coil and supports the movable stacked body on the inside of the coil with a pair of elastic support parts in a state in which the movable stacked body can reciprocate and vibrate in an axial direction; and a pair of connection parts each having a cylindrical member and a shaft member which is inserted into the cylindrical member and has a flange on the base end thereof. While the leading ends of the shaft members are in contact with the front surface or the rear surface of the magnet in the openings of the pair of yokes, the pair of connection parts cause the movable stacked body to be connected to the pair of elastic support parts by clamping the pair of elastic support parts by means of the flange of the shaft members and the base end-side end surface of the cylindrical member.
H02K 33/12 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
40.
DRIVING CONTROL DEVICE, DRIVING CONTROL SYSTEM, AND STATE ESTIMATION METHOD
The present invention improves the stability of the operation of a motor when a commutation mode is switched. This motor drive control device (3) comprises: a control circuit (1) that generates a drive control signal (Sd); and a drive circuit (2) that drives the coil (41) of a motor (4) on the basis of the drive control signal (Sd). The control circuit (1) includes: a commutation mode setting unit (11) that sets as a communication mode, a first commutation mode in which the coil (41) is commutated on the basis of the detection result of zero crossing of a back electromotive force of the coil (41) or a second commutation mode in which the coil (41) is commutated so that the rotational speed of the motor (4) does not exceed a target rotational speed; a target rotational speed setting unit (14) that sets the target rotational speed; and a drive control signal generation unit (12) that generates the drive control signal (Sd) on the basis of the commutation mode set by the commutation mode setting unit (11). The target rotational speed setting unit (14) gradually reduces the target rotational speed to a final target value (st) when the commutation mode is switched from the first commutation mode to the second commutation mode.
XX, SSG) attached to the outer peripheral surface of the hollow shaft; and a processing circuit (20) that is disposed in the internal space of the hollow shaft and processes the output from the strain gauge.
The present invention improves the drive efficiency of a motor. A motor drive control device (1) includes: a target point determination unit (12) that is synchronized to the induced voltage of a U-phase coil (Lu) of a motor (5) and determines a target point (P) for the zero cross of U-phase coil current (Iu) on the basis of a position detection signal (Shu) corresponding to the rotational position of the rotor of the motor (5); a current zero cross estimation unit (14) that estimates the zero cross point (Q) of the U-phase coil current (Iu) on the basis of the occurrence of a switch in the order of the timing at which the drive voltage (Vu) of the U-phase coil (Lu) reaches a high level and the timing at which a PWM signal (Suu) for turning a high side switch (QuH) corresponding to the U-phase on or off reaches a high level; a phase adjustment determination unit (15) that determines whether phase adjustment of the U-phase coil current (Iu) is necessary on the basis of the phase difference (Δφ) between the target point (P) and the zero cross point (Q); and a drive control signal generation unit (16) that generates a drive control signal (Sd) on the basis of the determination result (S2) by the phase adjustment determination unit (15).
The present invention suppresses an increase in power consumption of a motor. A control circuit (1) comprises: a commutation mode setting unit (11) that selects and sets as a commutation mode a first commutation mode in which a coil (41) of a motor (4) is commutated on the basis of a detection result of zero crossing of a reverse voltage of the coil (41), or a second commutation mode in which the coil (41) is commutated according to a target energization time; a driving control signal generation unit (12) that generates a driving control signal (Sd) on the basis of the set commutation mode; a current limitation value setting unit (14) that sets a current limitation value; and a current limitation unit (16) that instructs the driving control signal generation unit (12) to stop excitation of the coil (41) when the current flowing through the coil (41) has reached the current limitation value. The current limitation value setting unit (14) sets the current limitation value to an upper limit value (Ith1) in a period in which the commutation mode is the first commutation mode, and sets the current limitation value to a lower limit value (Ith2) in at least a partial period in the second commutation mode.
This absolute encoder comprises: a main shaft gear that rotates with a main shaft; a first magnet that rotates with the main shaft; a first magnetic sensor that detects a change in a magnetic flux generated by the first magnet; an idle gear that has a smaller number of teeth than the number of teeth of the main shaft gear and that rotates according to the rotation of the main shaft gear; a first secondary shaft disposed parallel to the main shaft; a first driven gear that is attached to the first secondary shaft and that meshes with the idle gear; a second magnet that rotates with the first secondary shaft; a second magnetic sensor that detects a change in a magnetic flux generated from the second magnet; a second secondary shaft disposed parallel to the main shaft; a second driven gear that is attached to the second secondary shaft, that has a different number of teeth from the number of the teeth of the first driven gear, and that meshes with the idle gear; a third magnet that rotates with the second secondary shaft; and a third magnetic sensor that detects a change in a magnetic flux generated from the third magnet.
G01D 5/245 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
G01D 5/04 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means using gearing
G01D 5/12 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
47.
MARKER DETECTION DEVICE, MONITORING SYSTEM, AND METHOD THEREFOR
The present invention detects markers at high speed. A marker detection device according to the present invention comprises: a storage unit configured to store, as a registered descriptor, a feature descriptor generated from an image that captures a marker in which a plurality of colors are arranged in one direction; an image acquisition unit configured to acquire a one-dimensional image; a feature point detection unit configured to detect a feature point from the one-dimensional image; a feature description unit configured to generate, as an observation descriptor, the feature descriptor which represents a change in luminance of a region including the feature point; and a marker determination unit configured to determine whether or not the one-dimensional image includes the marker on the basis of a collation result of the registered descriptor and the observation descriptor.
G06V 10/74 - Image or video pattern matching; Proximity measures in feature spaces
G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
G06V 10/46 - Descriptors for shape, contour or point-related descriptors, e.g. scale invariant feature transform [SIFT] or bags of words [BoW]; Salient regional features
One problem addressed by the present invention is the further reduction in size of a torque sensor. A torque sensor (100) equipped with a holder (101) which has an inner-circumferential member (110) and an outer-circumferential member (120), a bearing (102) positioned on the inner-circumferential member (110), and a strain sensor (103), wherein: the outer-circumferential member (120) has an elastic section (122); the strain sensor (103) is attached to the elastic section (122); and the elastic section (122) and the strain sensor (103) each extend along a plane which is parallel to the axial direction.
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
The present invention provides a sensor device having excellent environmental resistance. A sensor device (100, 200, 300, 400, 500) includes a shaft (S), a bearing (101, 501) that has an inner circumference side (101a, 501a) and an outer circumference side (101b, 501b), and a strain gauge (102) that is attached to the outer circumference side (101b, 501b) of the bearing (101, 501) directly or via another member. The shaft (S) is disposed radially inside the inner circumference side (101a, 501a) of the bearing (101, 501). The bearing (101, 501) and the shaft (S) are eccentric with respect to each other.
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
This strain gauge includes a substrate, a resistor formed on the substrate, and two wires which are formed on the substrate and which are connected in series to both end portions of the resistor, wherein: the resistor includes a plurality of elongate portions which have longitudinal directions arranged parallel to one another in a first direction and which are connected in series with one another; one of the wires is arranged parallel to the elongate portion positioned at one end in a second direction perpendicular to the first direction, and is connected to one end, in the first direction, of said elongate portion; the other wire is arranged parallel to the elongate portion positioned at the other end in the second direction, and is connected to one end, in the first direction, of said elongate portion; each wire includes a first metal layer and a second metal layer which is laminated onto the first metal layer and which is formed form a material having a lower volume resistivity than the first metal layer; an outer edge of the first metal layer is exposed away from the second metal layer in a plan view; and in a plan view, an end portion of the second metal layer on one end side in the first direction projects further to said one end side than an end portion, on said one end side in the first direction, of a gap between the first metal layer and the elongate portion adjacent to the first metal layer.
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
groovesgrooves 21, 31, and a crown-type retainer 50 inserted between the balls 40. The retainer 50 includes an annular base 51, a pair of supports 52 extending in the axial direction from the base 51, and a plurality of pockets 53 which are formed along the circumferential direction and into which the balls 40 are fitted between the supports 52. The retainer 50 is provided with a tapered surface 54 that comes into contact with the inner ring 30 and that, at the corner of the base 51 on the inner peripheral surface side, gradually increases in inner diameter along the axial direction.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
A vibration actuator according to the present invention comprises a plate that is a magnetic body, an electromagnet that is provided on the plate and is formed by providing a coil to a center part of a core, and an elastic body that supports the core on both sides of the coil and is connected to the plate. Magnetic force generated by energization of the coil causes one of the coil or the plate to be displaced toward the other and vibrate.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
Provided is a vibration actuator comprising a plate made of magnetic material, a flat electromagnet placed on the plate and having a coil at the center of the core, and a flat elastic body for supporting the electromagnet at a gap from the plate and positioning the coil axis parallel to the plate, wherein when the coil is supplied with electric current to generate a magnetic force, one of the coil and the plate is displaced toward the other, resulting in vibration.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
A motor (1) includes: a shaft (20) having a first end and a second end; a cylinder (11C); a bearing (21) that rotatably supports one of the shaft (20) and the cylinder (11C) and is fixed to the other of the shaft (20) and the cylinder (11C); a lid (50) covering the bearing (21) and the cylinder (11C); and a biasing structure (60). The lid (50) includes a first wall (56) fixed to the shaft (20), and a second wall (52) fixed to the cylinder (11C). The first wall (56) and the second wall (52) oppose each other, directly or via a washer (70), in a longitudinal direction of the shaft (20). The biasing structure (60) biases the first wall (56) toward the second wall (52) in the longitudinal direction of the shaft (20).
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
This motor (1) comprises a shaft (90), a stator (80), and a rotor (2). The rotor (2) is provided with a yoke (10) and a magnet (40). The yoke (10) has an annular part (19), a magnetic pole part (15), a connection part (12), and a cavity (75). The annular part (19) is positioned on the radially inward side. The magnetic pole part (15) is positioned on the radially outward side and is in contact with the magnet (40). The connection part (12) connects the annular part (19) and the magnetic pole part (15). The cavity (75) is formed between the magnetic pole part (15) and the connection part (12) in the circumferential direction. The magnetic flux on the inside-diameter side of the magnet (40) passes through the outer peripheral surface of the magnetic pole part (15).
The present invention provides an inexpensively configured vehicle cabin illumination device that exhibits minimal attenuation in light intensity. The present invention comprises a light source (610) and a translucent cover (300). The cover (300) is provided with an entering-light unit (310) irradiated with illumination light from the light source (610), and a reflection unit (320) formed on the surface opposite to the vehicle cabin side. The reflection unit (320) causes the illumination light that has entered into the cover (300) to be reflected toward the vehicle cabin side. The incoming light unit (310) has a translucent part (311) via which a portion of the illumination light from the light source (610) is allowed to pass to the vehicle cabin side, and an incident light unit (312) via which a portion of the illumination light from the light source (610) is allowed to enter toward the inside of the cover (300).
H01H 36/00 - Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
B60Q 3/64 - Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device
B60Q 3/74 - Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps
B60Q 3/76 - Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for spotlighting, e.g. reading lamps
One of the problems addressed by the present invention is to provide a motor of which reduction of lifespan is suppressed. A motor (1) comprises: a shaft (277); a first bearing (221) disposed on one side in the axial direction of the shaft (277); a second bearing (222) disposed on the other side in the axial direction of the shaft (277); and a bearing housing (207) which is a holding member for holding the first bearing (221) and the second bearing (222). In the radial direction, the distance between the first bearing (221) and the holding member is smaller than the distance between the second bearing (222) and the bearing housing (207).
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
58.
DOOR OPENING/CLOSING DEVICE AND DOOR OPENING/CLOSING METHOD
A door opening/closing device 10 includes a setting unit 34 that sets, on the basis of first distances Md1, Md2 measured by a measurement unit 32, at least a section of one of a first detection region 16A and a second detection region 16B as a start area 35 for detecting first steps Sm1a, Sm2a among setting operations Sm1, Sm2 performed by a detection target 7, and the setting unit also sets a section of the other of the first detection region 16A and the second detection region 16B as a trigger area 36 for detecting second steps Sm1b, Sm2b among the setting operations Sm1, Sm2. A control unit 30 opens/closes a door 2 by means of a drive unit 28 when it is determined, due to a change in the distances Md1, Md2 measured by the measurement unit 32, that the detection target 7 has performed the setting operations Sm1, Sm2 including movement between the start area 35 and the trigger area 36.
Provided is a motor and a rotary blade device that can improve dust-proof and water-proof performance. A motor (1) comprises an annular rotor (20), and a stator (10) facing the rotor (20). The rotor (20) has a magnet (23), and a housing (21) covering the magnet (23). The stator (10) has a coil (15), and a holder (11) that holds the coil (15). The housing (21) has first protruding portions (212g, 212h) protruding toward the holder (11). The holder (11) has a second protruding portion (113) protruding toward the housing (21). The second protruding portion (113) faces each of the first protruding portions (212g, 212h) via a gap in a radial direction.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
The objective of the present invention is to suppress degradation of a bearing in a motor. A motor (100, 300, 500) of the present invention comprises a shaft (101), a bearing (111, 311, 511), and a supporting member (112, 312, 512) that supports the bearing (111, 311, 511). The supporting member (112, 312, 512) includes a protruding portion (112a, 312a, 512a) that protrudes toward the shaft (101). The bearing (111, 311, 511) and the protruding portion (112a, 312a, 512a) are spaced apart from each other in the axial direction. The protruding portion (112a, 312a, 512a) and the shaft (101) are spaced apart from each other in a radial direction.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
Provided is a motor with which motor performance can be improved. A motor (1) comprises: a rotor (20); and a stator (10) facing the rotor (20). The rotor (20) includes: a magnet (23); a yoke (22) that is in contact with the magnet (23); and a holder (21) that holds the magnet (23) and the yoke (22). The yoke (22) includes: a first end section (221a) defined at one circumferential end; and a second end section (221b) defined at another circumferential end. In the radial direction, an inner peripheral surface of the yoke (22) faces an outer peripheral surface of the holder (21) with a first gap (225) interposed therebetween.
This gripping device (1) comprises a conversion part (4) which converts the rotary driving of a drive shaft (211) into a linear movement of a gripping part (45). The conversion part (4) has: a cam (4a) in which a cam groove (411) recessed from one end surface (411f1) toward the other end surface (411f2) is formed; and a bearing (42) inserted into the cam groove (411). An end surface (42f1) of the bearing (42) is disposed on the other end surface (411f2) side in the extension direction (Z-direction) of the drive shaft (211) to be separated from the one end surface (411f1).
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
A rotation device (1) comprises: a motor (3); gears (5, 6); a first molded product (81) that is formed from an elastic resin; a first non-molded product (41) that is formed from an elastic resin; and a housing (2). The motor is provided with a rotation shaft (31) and a frame (30). The housing (2) is provided with a first inner surface (261) in the rotation axis direction of the motor (3). The frame (30) is provided with a tube that has two openings in the rotation axis direction of the motor (3), and a first portion that closes one of the two openings. In the rotation axis direction of the motor, the first portion of the frame is connected, via the non-molded product, to the first inner surface of the housing (2) that is opposite from the first portion of the frame. A part of the frame is supported by a part of the housing (2) with the first molded product therebetween.
The present invention speedily detects short-circuiting of a coil of a motor. In a motor driving control device (3), a control circuit (1) includes a driving control signal generating unit (10) that generates a driving control signal (Sd) such that a motor (4) is in a driving state in accordance with a driving command (Sc), a current limit value setting unit (15) that sets a current limit value (Ith), a current limiting unit (16) that instructs the driving control signal generating unit (10) to stop excitation of a coil (41) of the motor (4) in a case in which a current flowing through the coil (41) reaches the current limit value (Ith), a clocking unit (19) that measures time over which excitation of the coil (41) is performed by a driving circuit (2), and a short-circuit determining unit (17) that performs short-circuit determining processing for determining whether or not the coil (41) is short-circuited, on the basis of the time measured by the clocking unit (19). In a case in which the time measured by the clocking unit (19) is shorter than a threshold value, the short-circuit determining unit (17) determines that the coil (41) is short-circuited in the short-circuit determining processing.
A planar illumination device (1) according to an embodiment comprises a substrate (2), a first optical element (5a), a second optical element (6a), a third optical element (7a), a pair of fourth and fifth optical elements (6b, 7b), and a sixth optical element (10a). A plurality of light sources (3) are two-dimensionally disposed on the substrate (2). The first optical element (5a) is disposed on the emission side of the plurality of light sources (3), and collects light emitted from the plurality of light sources (3). The second optical element (6a) is disposed on the emission side of the first optical element (5a), and tilts the distribution of the light collected by the first optical element (5a) with respect to a first axial direction within an emission surface. The third optical element (7a) is disposed on the emission side of the second optical element (6a), and extends the light tilted by the second optical element (6a) in the first axial direction. The pair of fourth and fifth optical elements (6b, 7b) are disposed on the emission side of the plurality of light sources (3), and extend light in a second axial direction orthogonal to the first axial direction within the emission surface. The sixth optical element (10a) is substituted for the second optical element (6a) and the third optical element (7a) by a combination of the second optical element (6a) and the third optical element (7a).
This pulse wave sensor comprises: a strain-generating body having a plurality of elongated slits curved in the same direction; and a strain gauge that is provided on the strain-generating body and has a Cr mixed phase film as a resistor. In each of the plurality of slits, a distance from the center of gravity of the strain-generating body to one end of the slit is different from a distance from the center of gravity of the strain-generating body to the other end of the slit. The pulse wave sensor detects a pulse wave on the basis of a change in the resistance value of the resistor accompanying the deformation of the strain-generating body.
A61B 5/02 - Measuring pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography; Heart catheters for measuring blood pressure
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
This pulse wave sensor comprises: a strain-generating body having a circular opening; a resin layer covering one surface of the strain-generating body; and a strain gauge which is disposed on the other surface opposite to the one surface of the strain-generating body and has a Cr mixed phase film as a resistor, wherein 0.059≤t≤0.124 when the material of the strain-generating body is SUS and d=32, 0.046≤t≤0.099 when the material is SUS and d=22, 0.030≤t≤0.067 when the material is SUS and d=13, 0.026≤t≤0.034 when the material is SUS and d=7, 0.084≤t≤0.166 when the material is copper and d=32, 0.066≤t≤0.132 when the material is copper and d=22, 0.044≤t≤0.088 when the material is copper and d=13, 0.032≤t≤0.050 when the material is copper and d=7, 0.097≤t≤0.212 when the material is aluminum and d=32, 0.079≤t≤0.168 when the material is aluminum and d=22, 0.050≤t≤0.107 when the material is aluminum and d=13, and 0.038≤t≤0.063 when the material is aluminum and d=7, where d [mm] is the diameter of the circular opening and t [mm] is the thickness of the strain-generating body. Pulse wave detection is based on the change in the resistance value of the resistor accompanying the deformation of the strain-generating body.
A61B 5/02 - Measuring pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography; Heart catheters for measuring blood pressure
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
69.
ABNORMALITY DETERMINATION MODEL GENERATION METHOD, ABNORMALITY DETERMINATION DEVICE, ABNORMALITY DETERMINATION METHOD, AND TRAINED MODEL
This abnormality determination model generation method comprises: detecting the load of a subject (S) by means of load sensors (LS1, LS2, LS3, LS4) disposed in a bed (BD); creating teaching data in which a plurality of kinds of feature amounts based on the detected load are respectively associated with abnormal states; and creating a model which classifies, on the basis of the plurality of kinds of feature amounts, states of the subject into the abnormal state by supervised machine-learning using the teaching data and determining, as an explanatory variable, at least one of the plurality of kinds of feature amounts on the basis of the model; and generating an abnormal determination model which determines, by means of the machine-learning using the explanatory variable, that the subject is in the abnormal state on the basis of the explanatory variable. The plurality of kinds of feature amounts include frequency feature amounts calculated by performing a short-time Fourier transform on the load of the subject.
Provided are a radar device and a received signal processing method with which it is possible to improve the accuracy of detection of an object such as an organism, while minimizing increases in configuration complexity. This radar device (100) comprises a transmission unit (110) and a reception unit (120). The reception unit (120) comprises: a leak path component detection unit (133) that extracts, as a leak path component in a signal from the transmission unit to the reception unit, a detection component appearing at a specific distance in a received signal; a leak path representative value acquisition unit (134) that acquires a representative value of the leak path component on the basis of time-series signals of the extracted leak path component during a prescribed period; and a correction unit (135) that uses the time-series signals of the leak path component and the representative value of the leak path to correct time-series signals of a detection component appearing at an object detection distance in the received signal.
A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
A61B 5/113 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb occurring during breathing
G01S 7/41 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisation; Target signature; Target cross-section
G01V 3/12 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves
A planar illumination device (1) comprises: a plurality of light sources (4); a condenser lens (6); and a field lens (8). The plurality of light sources (4) are disposed two-dimensionally on a substrate (3), and the light emission of each is controlled individually. The condenser lens (6) is disposed so as to be parallel to the substrate (3) on the emission side of the light sources (4), and converges light emitted from the light sources (4) into substantially parallel light beams. The field lens (8) is disposed on the emission side of the condenser lens (6), and is disposed so as to be inclined in at least one intersecting direction in a plane parallel to the substrate (3). The field lens outwardly spreads the incident light from the condenser lens (6), and a uniform optical distance is secured between the field lens and an externally-mounted liquid crystal panel (101).
A sterilization system according to an embodiment comprises: a light source unit (21), a horizontal angle adjustment unit (4) and/or a vertical angle adjustment unit (3), and a control device (5). The light source unit (21) emits ultraviolet light having a wavelength that has little effect on the human body. The horizontal angle adjustment unit (4) adjusts the horizontal angle of the light source unit (21) by rotating the light source unit (21) in the horizontal direction. The vertical angle adjustment unit (3) adjusts the vertical angle of the light source unit (21) by rotating the light source unit (21) in the vertical direction. The control device (5) controls the rotation of the horizontal angle adjustment unit (4) and/or the vertical angle adjustment unit (3), and irradiates an object with ultraviolet rays from the light source unit (21). The control device (5) performs control, for each irradiation area and time period, on the basis of setting data including an irradiation direction for starting irradiation of ultraviolet rays, an irradiation amount of ultraviolet rays that triggers a change of the irradiation direction, and a next irradiation direction.
According to the present invention, the rotational speed of a motor is more reliably brought close to a target rotational speed. A motor drive control device (2) is characterized by comprising: a drive circuit (6) that applies, to a coil of a motor (3), an alternating voltage obtained by switching and converting a direct voltage (VDD), on the basis of a drive control signal (Sd) for controlling driving of the motor (3); and a control circuit (5) that performs PWM control to generate a PWM signal as the drive control signal (Sd) such that the rotational speed (Sr) of the motor (3) matches a target rotational speed (Stg) and a sine-wave current flows through the coil. The motor drive control device (2) is characterized in that the control circuit (5) generates the PWM signal by increasing the degree of modulation indicating the ratio of the command value of the alternating voltage with respect to the direct voltage (VDD) when the rotational speed (Sr) has not reached the target rotational speed (Stg).
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
The present invention improves both stability and responsiveness of the rotation speed of a motor in motor speed control. A motor driving control device (2) includes: a driving circuit (6) that drives a motor (3) by applying a voltage to a coil of the motor (3) on the basis of a driving control signal (Sd) for controlling the driving of the motor (3); and a control circuit (5) that performs feedback control to generate the driving control signal (Sd) such that a rotation speed (Sr) of the motor (3) matches a target rotation speed (Stg). The control circuit (5) changes the gain (Sg) of the feedback control in a stepwise manner such that the gain (Sg) becomes smaller as the deviation (Sdf) of the rotation speed (Sr) of the motor (3) relative to the target rotation speed (Stg) becomes smaller.
Provided is a centrifugal fan that ensures freedom of placement of the centrifugal fan inside a vehicle body, for example, and can prevent damage to a coupling member in advance. The centrifugal fan accommodates an impeller and a motor for rotating the impeller inside a casing in which an upper casing 120 and a lower casing 130 are coupled by means of a first coupling part and a second coupling part. The upper casing 120 comprises an upper outer peripheral wall part 121 forming an outer peripheral surface, and the lower casing 130 comprises a lower outer peripheral wall part 131 forming an outer peripheral surface. The first coupling part comprises a fitting portion 122 that is positioned radially inward of the outer peripheral surface of the upper outer peripheral wall part 121, and that protrudes toward the lower casing 130 and fits to the inside of the lower outer peripheral wall part 131. The fitting portion 122 comprises, on an end on the lower casing 130 side, a claw section 123 that protrudes radially outward, and the second coupling part comprises an engaging hole portion 135 which is provided to the lower outer peripheral wall part 131 and with which the claw section 123 engages.
The present invention provides a fluid sensor that has a low driving voltage and excellent detection precision. This fluid sensor comprises: a heat-generating resistor that generates heat when a current flows through a conductor in accordance with a driving voltage; and a temperature-detecting body that is provided around the heat-generating resistor and that detects the temperature in the vicinity of the heat-generating resistor, wherein the heat-generating resistor includes a heater part and a wiring resistor that is provided around the heater part and that connects to the heater part, the heater part has a fold-back structure in which the conductor is folded back a plurality of times, and the conductor width in the heater part along a direction that intersects the direction in which the current flows is less than the wiring width of the wiring resistor.
The present invention reduces unfavorable effects of rain and wind on a liquid level sensor in a drainage facility. A liquid level detection unit (1) is characterized by comprising: a float-type liquid level sensor (30) that is suspended using a cable (40) in a rainwater tank (100) and that detects when the liquid level reaches a predetermined liquid level; a support plate (12) that supports the liquid level sensor (30) in the rainwater tank (100) in a floatable manner; a cable guide member (50) attached to the cable (40), and having an introduction section (53) for introducing the cable (40) and an extraction section (54) for extracting the cable at a position where the extending direction of the cable (40) introduced is changed; and a fixing plate (60) that fixes the cable guide member (50) to the support plate (12) so that the extraction section (54) faces opposite to the support plate (12).
G01F 23/46 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using bands or wires as transmission elements using magnetically actuated indicating means
This sensor module comprises: a substrate; a sensor chip that is mounted on one surface of the substrate and that detects displacement in a prescribed axial direction; a bonding wire for electrically connecting a first electrode, which is formed on the one surface of the substrate, and a second electrode of the sensor chip; and a protective frame that is disposed at the peripheral edge of the one surface of the substrate so as to be separated from the bonding wire.
G01L 5/162 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of piezoresistors
79.
GRIPPING DEVICE, GRIPPING SYSTEM, AND METHOD FOR CONTROLLING GRIPPING DEVICE
This gripping device comprises: a motor that rotates in accordance with an operation value; a gripping unit that is provided with a first finger part and a second finger part and that, by changing the distance between the first and second finger parts using the motor, grips an object using the first and second finger parts; a force detection unit that, when the first and second finger parts grip the object, detects the gripping force with which the first and second finger parts grip the object; and a control unit that outputs the operation value such that the magnitude of the gripping force detected by the force detection unit becomes a force command value. The control unit detects deviation of the object from a predetermined reference position on the basis of the time from when the gripping operation is started to when the first and second finger parts come into contact with the object.
A planar lighting device (1A) comprises: a substrate (3) provided with a plurality of light sources (30) on one surface side thereof; and a reflector (4) having a plurality of segments (4s) on which is formed a reflective surface (4f) surrounding a light source (30), the segments (4s) being disposed on one surface side of the substrate (3) and respectively corresponding to each of the plurality of light sources (30). From among the plurality of segments (4s), the outer-side reflective surface and inner-side reflective surface are asymmetrical in the outer peripheral segment (4so) disposed on the outer peripheral part of the reflector (4).
22N on one side of the base material; and an inorganic insulating layer formed on the other side of the base material, wherein the inorganic insulating layer is formed in a position that overlaps with at least an area where the resistive element is formed in plan view.
G01L 1/22 - Measuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
[Problem] To provide: a grease composition with which satisfactory acoustic properties can be achieved even in high-load environments; and a rolling bearing, as well as a motor equipped with the bearing, in which the grease composition is used so that satisfactory acoustic properties can be achieved in high-load environments. [Solution] A grease composition comprising a fluorine-based base oil, a fluorine-based thickener, and yttria-stabilized zirconia nanoparticles; a rolling bearing packed with said grease composition; and a motor equipped with said rolling bearing.
C10M 169/00 - Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
F16C 33/66 - Special parts or details in view of lubrication
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
C10M 105/52 - Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen containing carbon, hydrogen and halogen only
C10M 105/54 - Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen containing carbon, hydrogen, halogen and oxygen
C10M 119/22 - Lubricating compositions characterised by the thickener being a macromolecular compound containing halogen
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 40/00 - Specified use or application for which the lubricating composition is intended
The present invention ensures space on the rear surface side of a central section of an operation knob while improving operability. In this multi-directional input device 10, a base 20 is provided on the rear surface side of an operation knob 40. A detection plate 30 extends along the circumferential direction of the operation knob 40, and a supported part 30A of the detection plate 30 is fixed to the base 20. A detection portion 30B of the detection plate 30 is provided with a strain gauge 60, and the operation knob 40 is coupled by coupling shafts 42 to the detection portion 30B so as to be incapable of relative movement. Due to the foregoing, operating force input to the operation knob 40 is transmitted to the detection portion 30B, and the detection portion 30B deforms, thereby making it possible for the strain gauge 60 to detect the strain produced by the deformation of the detection portion 30B. The plurality of coupling shafts 42 are disposed at positions that are eccentric relative to an axial line AL of the operation knob 40. Thus, it is possible to ensure space AR on the rear surface side of the central section of the operation knob 40.
A gripping device comprising: a motor that rotates in accordance with an operation value; a gripping unit that grips an object by a first finger and a second finger; a force detection unit that detects a gripping force with which the first finger and the second finger grip the object when the object is gripped by the first finger and the second finger; and a control unit that outputs the operation value so that the force detection value of the gripping force detected by the force detection unit serves as a force command value. The control unit is capable of executing a first control process which calculates a position command value that determines the interval on the basis of the force detection value, and calculates the operation value on the basis of the position command value, and a second control process which calculates the operation value on the basis of the difference between the force detection value and the force command value. The control unit selects and executes one of the first control process and the second control process, depending on the hardness of the object.
Provided is a motor driving control apparatus and a motor driving control method of which driving efficiency of a motor is high, and that can suppress vibrations from being generated. A motor driving control device (1) includes a control circuit unit (3) that outputs a driving control signal (Sd) for causing PWM driving of a motor (20), and a motor driving unit (2) that drives the motor (20) on the basis of the driving control signal (Sd). The control circuit unit (3) controls a PWM frequency such that the PWM frequency of the driving control signal (Sd) is in a predetermined range at a first revolutions range of a predetermined revolutions range of the motor (20), and also a PWM pulse count per cycle of electrical angle of the motor (20) is a desired value, and such that the PWM frequency is in a predetermined range at a revolutions range excluding the first revolutions range.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
A tactile-sensation presenting device according to the present invention is provided with: a holding part that makes it possible to hold an operable appliance that is operated by an operator by touching; a vibratory actuator that includes a movable member supporting the holding part and a fixed member supporting the movable member so as to allow elastic vibration along a vibration direction, the vibratory actuator driving the movable member in one direction along the vibration direction to generate vibration, which causes a tactile sensation to be given to the operator via the operable appliance; a base to which the fixed member of the vibratory actuator is fixed; and an attenuating part disposed in a state of contact with each of the holding part and the base.
A vehicle power supply device 1 comprises: a backup power supply 6 that has power supplied thereto from a vehicle-mounted battery 3; a booster 20 that boosts the voltage of the backup power supply 6 to a boost voltage Vb; a motor drive unit 7 that is connected to the battery 3 and the booster 20, has power supplied thereto from whichever of the battery 3 and the booster 20 has the higher voltage, and can drive an electric motor 2; and a control unit 8 that controls the operation of the booster 20. The control unit 8 controls the booster 20 and boosts the voltage of the backup power supply 6 to greater than the rated voltage of the battery 3, when a determination has been made that prescribed boost conditions have been satisfied.
B60R 16/03 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems
B60R 16/033 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems characterised by the use of electrical cells or batteries
E05B 81/82 - Electrical circuits characterised by the power supply; Emergency power operation using batteries other than the vehicle main battery
88.
ACTUATOR, AND ACTUATOR AND SYSTEM THAT PRESENT PERCEPTIBLE OUTPUT
The present invention comprises: a movable body including a disk-shaped magnet, a pair of disk-shaped yokes that are respectively fixed to the front surface and the back surface of the magnet, a pair of spring retaining parts that are each connected at one end to a yoke and connected at the other end to a central part of a circular leaf spring, and a projection part that projects in the axial direction of the magnet from said other end of one of the pair of spring retaining parts and is connected to a user-operated operation part; and a fixed body including a coil that is disposed on the outer circumference of the movable body, and a case that has an opening through which the projection part is inserted and houses the movable body and the coil with the projection end side of the projection part projecting to the outside, the fixed body supporting the movable body via the leaf springs so as to be movable in the axial direction of the magnet.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
The present invention measures, with high precision, the current of a coil of a motor. A motor drive control device (10) comprises: a control circuit (1) that generates a drive control signal (Sd) on the basis of a measured value of a current (i) flowing to a coil (31) of a motor (3); and a drive circuit (2) that drives the coil (31) on the basis of the drive control signal (Sd). The drive circuit (2) includes: a switch (SW1) and a switch (SW2) connected in series; a switch (SW3) and a switch (SW4) connected in series; a current detection element (R1) connected in series to the switch (SW1) and the switch (SW2); and a current detection element (R2) connected in series to the switch (SW3) and the switch (SW4). The coil (31) is connected between a node (A+) to which the switch (SW1) and the switch (SW2) are commonly connected, and a node (A-) to which the switch (SW3) and the switch (SW4) are commonly connected. The control circuit (1) measures the current (i) on the basis of an average value of a current (i1) flowing to the current detection element (R1) and a current (i2) flowing to the current detection element (R2).
This production method for a permanent magnet comprises at least: a magnetized object formation step for forming a magnetized object (100) by applying a predetermined pressure to a magnet powder and a thermosetting resin; and a heating step for heating, to a temperature equal to or higher than the Curie point of the magnet powder, the magnetized object (100) that is placed on a base member (110) that is in a state of being in proximity to a permanent magnet (63) of a field magnet part (6), to magnetize the magnet powder and melt and cure the thermosetting resin for firmly attaching the magnetized object (100) to the base member (110).
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H01F 13/00 - Apparatus or processes for magnetising or demagnetising
H02K 15/03 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
91.
VEHICULAR POWER SOURCE DEVICE AND DOOR LATCH DEVICE
A vehicular power source device 1 comprises: a backup power source 6 that is supplied with power from a battery 3 mounted in the vehicle; a booster unit 20 that boosts the voltage of the backup power source 6 to a prescribed boost voltage Vb; a motor drive unit 7 that is connected to the battery 3 and to the booster unit 20, and that is supplied with power from either the battery 3 or the booster unit 20 so as to be capable of driving an electric motor 2; a first switching unit 60 that conducts/cuts off the power supply between the battery 3 and the motor drive unit 7; a control unit 8 that controls the first switching unit 60; and a second switching unit 70 that is provided between the booster unit 20 and the first switching unit 60, and that turns off the first switching unit 60 if the voltage output from the booster unit 20 reaches or exceeds the prescribed boost voltage Vb.
B60R 16/02 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric
B60R 16/03 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems
E05B 81/82 - Electrical circuits characterised by the power supply; Emergency power operation using batteries other than the vehicle main battery
This position determination system comprises: at least three first communication devices 10A-10C that each acquire a distance to a mobile terminal 3 by radio communication with the mobile terminal 3; and a position determination unit that determines the position of the mobile terminal from the distances respectively acquired by the at least three first communication devices 10A-10C. The at least three first communication devices 10A-10C include three first communication devices 10A-10C arranged in mutually different positions when viewed along a vehicle height direction. At least two first communication devices among the three first communication devices 10A-10C are arranged in mutually different positions in a vehicle length direction. At least two first communication devices among the three first communication devices 10A-10C are arranged in mutually different positions in a vehicle width direction. The at least three first communication devices 10A-10C are disposed at positions higher than the lower edge of a side window of a vehicle 2.
A position determination system 1 equipped with: four or more communicators 10A-10C, 20A-20D which each obtain distance to a portable terminal 3; a position determination unit 31 for determining the position of the portable terminal 3 on the basis of the distances obtained by the four or more communicators 10A-10C, 20A-20D; a region determination unit 32 for determining in which region among a plurality of regions set in the periphery of a vehicle or inside the vehicle compartment the portable terminal 3 is positioned, on the basis of the portable terminal 3 position determined by the position determination unit 31; and a selection unit 33 for selecting three distances from the distances obtained by the four or more communicators 10A-10C, 20A-20D according to the region in which the region determination unit 32 has determined that the portable terminal 3 is positioned. The position determination unit 31 determines the position of the portable terminal 3 on the basis of the three distances selected by the selection unit 33.
This rolling bearing is provided with: an outer ring and an inner ring; rolling elements arranged between the outer ring and the inner ring so as to be capable of rolling; a retainer for holding the rolling elements; and a shield. The outer ring is provided with: a raceway surface for rollably supporting the rolling elements; recessed sections formed on both sides of the raceway surface in the axial direction; and ridge sections formed between the recessed sections and the raceway surface. The recessed section is provided with: a placing surface on which grease is placed; and a first inclined section that is formed between the placing surface and the ridge section and that approaches the outer circumferential surface of the outer ring towards the outside in the axial direction.
A method for producing a rare earth iron sintered magnet according to one embodiment of the present invention comprises: a step (S3) for filling a mold (110) with a rare earth iron magnet powder (201) that is produced by a rapid quenching method; a step (S3) in which the mold (110) is set in a sintering apparatus (100) and a predetermined current is supplied thereto from electrodes (171, 172) so as to apply heat and pressure to the rare earth iron magnet powder (201) in the mold, thereby producing a sintered magnet body (202); and a step (S5) for magnetizing the sintered magnet body (202) by means of a magnetization device. The mold (110) is composed of: hollow cylindrical dice (121, 122); punches (141, 142) which are inserted into the dice (121, 122); and die supports (161, 162) which are formed of a conductive material and are arranged on both ends of the dice (121, 122) in the axial direction. A cavity that is formed by the dice (121, 122) and the punches (141, 142) is filled with the rare earth iron magnet powder (201). The dice (121, 122) is composed of an inner die (122), which is formed of a non-conductive material, and an outer die (121), which is formed of a conductive material and is arranged on the outer side of the inner die (122); the inner peripheral surfaces of the die supports (161, 162) are in contact with the outer peripheral surface of the outer die (121); and electrodes (171, 172) are in contact with the die supports (161, 162).
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
This pulse wave measurement device can be worn by a subject and has: a pulse wave sensor having a strain gauge; a sensor disposition portion having the pulse wave sensor disposed thereon; a first curved portion joined at one end to the sensor disposition portion; a second curved portion joined at one end to the sensor disposition portion; and a band connected to the other end of the first curved portion and to the other end of the second curved portion, wherein the first curved portion and the second curved portion, in a planar view, are joined to opposite sides so as to sandwich the sensor disposition portion therebetween, and the curvatures of the first curved portion and the second curved portion are different.
A61B 5/02 - Measuring pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography; Heart catheters for measuring blood pressure
This strain gauge module comprises: a film-like strain detection device that is attached to an object to be measured, has a terminal on an upper surface thereof, and is for detecting strain that occurs in the object to be measured; and a thin-plate metal substrate that has an upper surface and a lower surface. The film-like strain detection device is mounted on the upper surface of the thin-plate metal substrate with an adhesive therebetween. The lower surface is an attachment surface for the object to be measured, and a thin-walled section having a partially reduced plate thickness is formed on the lower surface of the thin-plate metal substrate.
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
98.
MOTOR DRIVING CONTROL DEVICE, MOTOR UNIT, AND MOTOR DRIVING CONTROL METHOD
The present invention improves operation stability when the driving of a stepping motor starts. A motor driving control device (10) comprises: a control unit (11) that generates a control signal (Sd) for controlling the driving of a two-phase stepping motor (20); and a driving unit (12) that drives coils of two phases in the two-phase stepping motor (20) on the basis of the control signal (Sd). The control unit (11) has, as control modes, a first commutation control mode in which the commutation of the coils is carried out according to a target current supply time that is based on a preset commutation condition and a second commutation control mode in which the commutation of the coils is carried out on the basis of the result of detecting the zero crossing point of a reverse voltage of the coils. When the activation of the two-phase stepping motor (20) is started, the control unit generates the control signal (Sd) in the first commutation control mode. When the result of detecting the zero crossing point meets a prescribed condition, the control unit generates the control signal (Sd) in the second commutation control mode.
In the present invention, while satisfying constraints on power supply capacity, desired air flow-static pressure characteristics are satisfied without excessively limiting the drive current. The present invention comprises: a control circuit part (4) that generates a drive control signal (Sd) for controlling the actual rotation speed of a motor on the basis of a velocity command signal that indicates a target rotation speed of a motor (100); and a motor driving unit (90) that drives the motor (100) on the basis of the drive control signal (Sd). The control circuit part (4) has a power control unit (60) that enables selection of either a velocity feedback control mode that generates the drive control signal (Sd) so that the actual rotation speed of the motor (100) matches the target rotation speed, and a current feedback control mode that generates the drive control signal (Sd) so that the drive current of the motor (100) matches a target current, and the power control unit (60) sets a current threshold value according to a power supply voltage (Vdd) supplied from outside to the target current, and when the drive current is detected to be the current threshold value or greater, switches from the velocity feedback control mode to the current feedback control mode.
H02P 29/032 - Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
A motor (1) comprises a rotor (2), and a stator (10) that faces the rotor (2) in the radial direction. The rotor (2) comprises a yoke (24), magnets (40), and a resin part (60) that covers the yoke (24) and the magnets (40). The resin part (60) is positioned adjacent to the magnets (40) in the circumferential direction.
patents
