Patent ID: 9103672
Filing Date: 2015-08-11
Classification: G01C,G01P

Abstract:
1. Method of gyroscopic measurement in the form of an output signal supplied by a gyroscopic system comprising a vibrating gyroscope; said gyroscope vibrating in a first initial geometric position of vibration and supplying an original measurement signal; wherein a periodic control signal is applied to the vibrating gyroscope over a time period comprising a first portion of the time period and a second portion of the time period, in order to: rotate the geometric position of vibration in a first direction, during the first portion of the time period, according to a first speed profile, causing a change in the position of the vibration of said gyroscope from the first geometric position of vibration to a second geometric position of vibration; and rotate the geometric position of vibration in a second direction opposite to the first direction, during the second portion of the time period, according to a second speed profile, causing a change in the position of the vibration of said gyroscope from the second geometric position of vibration to a third geometric position of vibration; the first and second speed profiles generating a variation in the speed of the change of geometric position of vibration over time; said output signal being based on a corrected signal issuing from the original measurement signal; wherein the control signal has a zero mean over the time period; and wherein the corrected signal is based on error identification conducted by comparing the control signal with the corrected signal from an immediately previous iteration.