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:
Nov. 01, 2016
Filed:
Sep. 30, 2014
The Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
Marc S. Weinberg, Needham, MA (US);
Eugene H. Cook, Melrose, MA (US);
Stephen L. Finberg, Cambridge, MA (US);
Murali V. Chaparala, Newton, MA (US);
Thayne R. Henry, Waltham, MA (US);
Thomas A. Campbell, Cambridge, MA (US);
THE CHARLES STARK DRAPER LABORATORY, INC., Cambridge, MA (US);
Abstract
Methods and apparatus for calibrating a gyroscope without rotating the instrument. In one example, a calibration method includes operating the gyroscope in a self-oscillation loop to generate x-axis and y-axis drive signals, adding forcing signals to the x-axis and y-axis drive signals to produce pick-off x-axis and y-axis signals, measuring the pick-off x-axis and y-axis signals to produce measurement data, determining a relative phase between the pick-off x-axis and y-axis signals, based on the measurement data and the relative phase, estimating parameters of the gyroscope, based on the measurement data and the estimated parameters, calculating estimated position signals to calibrate the gyroscope.