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:
Jun. 26, 2012
Filed:
Jun. 09, 2009
A. Dorian Challoner, Manhattan Beach, CA (US);
A. Dorian Challoner, Manhattan Beach, CA (US);
The Boeing Company, Chicago, IL (US);
Abstract
Tuning an axisymmetric resonator such as in a disc resonator gyroscope (DRG) is disclosed. Frequency tuning a DRG in a single step informed by a systematic physical model of the resonator structure, sensing and actuation elements, such as a finite element model, is provided. The sensitivity of selected trimming positions on the resonator to reducing asymmetry terms is determined via perturbations of the systematic model. As well, the dependence of the parameters of model transfer functions between actuation and sensing elements on resonator asymmetry are systematically determined. One or two measured transfer functions may then be analyzed according to the systematic model to fully determine the needed asymmetry correction components of the DRG. One or two of four groups of four electrostatic bias electrodes or four groups of four laser trimming locations for the DRG are utilized to correct the asymmetry components which can give rise to mistuning.