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:
Jul. 15, 2014
Filed:
Sep. 30, 2011
Alan Bruce Touchberry, St. Louis Park, MN (US);
Timothy J. Callaghan, Roseville, MN (US);
Bruce A. Seiber, Arden Hills, MN (US);
Alan Bruce Touchberry, St. Louis Park, MN (US);
Timothy J. Callaghan, Roseville, MN (US);
Bruce A. Seiber, Arden Hills, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
Systems and methods for thermal gradient compensation for ring laser gyroscopes are provided. In one embodiment, a method for producing bias compensated angular rate measurements from a ring laser gyroscope comprises: sampling an angle measurement output from a laser block sensor to obtain an angular rate measurement; obtaining an laser block temperature measurement (T) for the laser block sensor; obtaining a temperature gradient measurement (T) for at least one gradient line across a portion of the laser block sensor; calculating a rate bias error by applying parameters produced from the temperature measurement (T) and the temperature gradient measurement (T) to a thermal gradient compensation model, wherein the thermal gradient compensation model includes at least one coefficient corresponding to the temperature gradient measurement (T); and calculating a difference between the angle rate measurement and the rate bias error to produce a bias compensated angular rate measurement.