The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 2020
Filed:
Oct. 15, 2018
Atlantic Inertial Systems Limited, Plymouth, GB;
Stewart McWilliam, Nottingham, GB;
Atanas Popov, Nottingham, GB;
ATLANTIC INERTIAL SYSTEMS LIMITED, Plymouth, GB;
Abstract
A vibrating structure angular rate sensor comprises a substrate; a plurality of supporting structures fixed to the substrate; an annular member flexibly supported by the plurality of supporting structures; a drive system arranged to apply a periodic driving force such that the annular memberoscillates, in use, in a primary mode of vibration at a resonant frequency f, with an amplitude of motion that generates a restoring force from the plurality of supporting structures; and a pick-off system arranged to determine the amplitude of motion of a secondary mode of vibration at a resonant frequency f, in which oscillation of the annular memberis induced by the Coriolis force resulting from an angular rate experienced by the sensor. In use, the restoring force has a non-linear relationship with the amplitude of motion and a number p of supporting structures is selected such that f=f.