Patent ID: 7159461
Filing Date: 2007-01-09
Classification: G01C

Abstract:
1. A gyroscope comprising at least one mass capable of vibrating along an x axis at a resonant excitation frequency F x and capable of vibrating along axis perpendicular to the x axis, at a resonant detection frequency F y , under the effect of the Coriolis force generated by a rotation about a z axis perpendicular to the x and y axes, comprising connected to the mass, a signal generator for generating a signal that disturbs the vibration of the mass along the y-axis, and a feedback control loop for controlling the resonant frequency F y so that F y is equal or practically equal to F x throughout the duration of use of the gyroscope, the feedback control loop comprising: means for modifying the resonant detection frequency F means for detecting the variation induced by the disturbing signal on the vibration of the mass along the y-axis, an error signal e representative of the difference between F control means for controlling the F