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:
Oct. 14, 2008
Filed:
Jul. 29, 2005
Kirill V. Shcheglov, Los Angeles, CA (US);
Ken J. Hayworth, Northridge, CA (US);
A. Dorian Challoner, Manhattan Beach, CA (US);
Chris S. Peay, Alhambra, CA (US);
Kirill V. Shcheglov, Los Angeles, CA (US);
Ken J. Hayworth, Northridge, CA (US);
A. Dorian Challoner, Manhattan Beach, CA (US);
Chris S. Peay, Alhambra, CA (US);
The Boeing Company, Chicago, IL (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
Parametrically disciplined operation of a symmetric nearly degenerate mode vibratory gyroscope is disclosed. A parametrically-disciplined inertial wave gyroscope having a natural oscillation frequency in the neighborhood of a sub-harmonic of an external stable clock reference is produced by driving an electrostatic bias electrode at approximately twice this sub-harmonic frequency to achieve disciplined frequency and phase operation of the resonator. A nearly symmetric parametrically-disciplined inertial wave gyroscope that can oscillate in any transverse direction and has more than one bias electrostatic electrode that can be independently driven at twice its oscillation frequency at an amplitude and phase that disciplines its damping to zero in any vibration direction. In addition, operation of a parametrically-disciplined inertial wave gyroscope is taught in which the precession rate of the driven vibration pattern is digitally disciplined to a prescribed non-zero reference value.