Electronic Gain Error Compensation For Whole-Angle Mode Coriolis Vibrating Gyroscopes With High Q Factor

Abstract

Electronic gain error (EGE) is one of the most important error sources for whole-angle mode Coriolis Vibrating Gyros (CVG). This paper analyzes the influence mechanism of EGE on precession angle (θ) drift and proposes a simple novel method of EGE compensation for whole-angle mode CVG. It is demonstrated that this method can compensate EGE and characterize the damping asymmetry of CVG with high Q factor (million-order) conveniently. Additionally, the drift of the precession angle can be effectively suppressed after compensating EGE. Finally, the approach in this paper is also widely applicable to other inertial sensors equipped with multielectrodes, which may be useful for further researches on inertial sensors with high accuracy.