Solid-state Coriolis Vibrating Gyros are based on the control of standing waves in a physical body, called a resonator which is housed within a protective case. The protective case which contains the resonator is called a Sensitive Element (SE), and there is one such SE per axis in all Innalabs CVG gyroscopes. The oscillations in the resonator are generated and detected by piezo-electric actuators, which are attached to the base of the resonator. A closed-loop electronic system is used to control the standing wave oscillation in the resonator, and to null the effects of Coriolis forces induced by the rotation of the resonator, providing as output a signal which is proportional to the gyroscope angular rate.
This electromechanical system is key to the very low output noise, and facilitates the large dynamic range required in several demanding applications.