METHOD OF ANGULAR MEASUREMENT BY MEANS OF A VIBRATING SENSOR TO WHICH MODULATED CONTROLS ARE APPLIED

摘要

Method of angular measurement by means of a sensor comprising an axisymmetric resonator associated with means for setting the resonator into vibration and with means for detecting an orientation of the vibration with respect to a reference frame of the sensor, comprising the steps of applying a precession control so as to slave an orientation of the vibration to an angular setpoint value and of determining an angular measurement on the basis of the precession control. The method comprises a phase of modulating the angular setpoint value in such a way that the said setpoint value uniformly sweeps an angular span of p radians and that a temporal derivative of the setpoint is deducted from the precession control prior to the determination of the angular measurement.