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:
Jan. 04, 2000
Filed:
Oct. 27, 1998
Bo Hans Ljung, Wayne, NJ (US);
Other;
Abstract
A single or dual input-axis Coriolis gyro sensor is comprised of a single planar inertia-member (10) connected to a coplanar counter-inertia (13) by a first set of elastic beams (12). The counter-inertia is in turn supported by a second set of coplanar elastic beams (15). The counter-inertia counteracts the reaction forces from the vibrating inertia-member and isolates the inertia-member from external vibrations. The inertia-member is angularly dithered about its center of gravity along an axis perpendicular to the plane. An input rate about a first or second orthogonal axis, locate in the plane of the sensor results in Coriolis moments, causing angular oscillations of the inertia-member. The angular oscillations are restrained by squeeze film damping and voltages applied to electrostatic damping electrodes. The electrode voltages are representative of the angular input rates.