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:
Dec. 16, 2014
Filed:
Sep. 27, 2010
Bernard Chaumet, Chatellerault, FR;
Bernard Chaumet, Chatellerault, FR;
Thales, Neuilly-sur—Seine, FR;
Abstract
Vibrating structure gyrometer with at least one tuning fork, produced by micro-machining from a thin plate, the said tuning fork comprising a pair of mobile inertial assemblies (EIM, EIM) linked by a coupling assembly (). A tuning fork comprises two controlled electrodes (') for electrostatic equilibration of the sense resonator along the sense axis y which are respectively associated with the two mobile inertial assemblies (EIM, EIM) of the said tuning fork, and control means (UCE) adapted for applying two respective continuous electrical voltages Vand Vto the said two electrodes (′) satisfying the relation in which crepresents the initial sensitivity of the gyrometer, when the two electrical voltages Vand Vare zero, to linear accelerations along the sense axis y, in deg·h·G, a represents a coefficient characterizing the influence of a discrepancy in stiffness between the two branches of the tuning fork on the sensitivity of the gyrometer to linear accelerations along the y axis, in deg·h·G·N·m, λ represents an electrostatic stiffness coefficient dependent on the said two electrodes (′) in N·m·V, Vand Vare expressed in Volts, and G equals 9.81 m·s.