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:
Apr. 22, 2014
Filed:
Dec. 06, 2010
David Roberfroid, Paris, FR;
Jean-baptiste Eudier, Paris, FR;
Alexandre Gori, Paris, FR;
Sagem Defense Securite, Paris, FR;
Abstract
A method of determining a heading by means of an inertial device () comprising at least one vibratory angle sensor () having a resonator associated with detector means and means for setting the resonator into vibration connected to a control unit to have a first mode of operation in which the vibration is left free to move in an angular frame of reference of the resonator, and a second mode of operation in which the vibration is maintained at a predetermined angle in the frame of reference of the resonator, and the method comprising the steps of: controlling the sensor in the second mode of operation to maintain the vibration on a predetermined electric angle corresponding to a least-error value of the sensor; and controlling the sensor in the first mode of operation to take a heading measurement, and controlling the sensor in the second mode of operation once the measurement has been taken and until the next measurement in order to maintain the vibration on the predetermined electric angle.