Control scheme for a rate integrating MEMS gyroscope

Rate integrating gyroscopes measure angular rate by measuring the change in energy transfer between two orthogonal modes of vibration as rate is applied. Although these gyroscopes have the potential for high accuracy due to their direct measurement of angle, they are often hindered by material imperfections, the most significant of which are perturbations in stiffness within the material structure. This paper describes a control scheme for a rate integrating ring gyroscope that can limit the effect of these imperfections, providing experimental results to demonstrate the validity of the scheme.