CUBOID INERTIAL MEASUREMENT UNIT

Register WIPO Patent
Application Number US2019014042
Publication Number 2019/143838
Status In Force
Filing Date 2019-01-17
Publication Date 2019-07-25
Owner CUBIC CORPORATION (USA)
Inventor
  • Fox, Andrew John
  • Parry, Matthew
  • Bradley, Byron

Abstract

An inertial measurement unit includes a substrate having MEMS gyroscopes arranged on the substrate as opposing pairs. The gyroscopes of each opposing pair are arranged on opposite sides of an axis of rotation of the substrate and each opposing pair has a central axis that intersects an axis of rotation of the substrate. A processor receives a rotational measurement from each gyroscope, compares the measurements from gyroscopes of each opposing pair, determines a mean or median rotation value for each opposing pair, and compares the mean or median rotation value with a threshold value. The processor assigns a weight to the mean or median value for each opposing pair and determines a rotation of the cuboid inertial measurement unit based on the mean or median value for each opposing pair and the respective weight for the mean or median value for each opposing pair.

IPC Classes  ?

  • G01C 21/16 - Navigation; Navigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
  • G01C 19/5783 - Mountings or housings not specific to any of the devices covered by groups
  • G01C 19/5776 - Signal processing not specific to any of the devices covered by groups