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:
Sep. 18, 2012
Filed:
Aug. 04, 2009
Jinbo Kuang, Acton, MA (US);
John A. Geen, Tewksbury, MA (US);
Jinbo Kuang, Acton, MA (US);
John A. Geen, Tewksbury, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
Inertial sensors with reduced sensitivity to quadrature errors and micromachining inaccuracies include a gyroscope incorporating two specially-configured single-axis gyroscopes for sensing rotations about two orthogonal axes (the axes of sensitivity) in the device plane, where each single-axis gyroscope includes a resonator having two rotationally-dithered shuttles interconnected by a fork and each shuttle is configured to tilt out-of-plane along a tilt axis perpendicular to the axis of sensitivity and includes corresponding Coriolis sensing electrodes positioned along an axis perpendicular to the tilt axis (i.e., parallel to the axis of sensitivity). The two single-axis gyroscopes may be interconnected, e.g., by one or more in-phase or anti-phase couplings interconnecting the forks and/or the shuttles.