VIBRATORY ROTATION SENSORS

摘要

A vibratory gyro including a hemispherical high Q resonator supported by an inner housing carrying a circular forcer electrode and sixteen discrete forcer electrodes. The orientation of the vibrating pattern in the resonator is electrostatically sensed by eight pickoff electrodes located on the inner spherical surface of an outer housing which establish two pickoff axes separated by 45 DEG . Signals obtained from the pickoff electrodes are utilized to develop a drive signal to the circular forcer electrode to electrostatically maintain a predetermined amplitude of pattern vibration and to develop drive signals for appropriate groups of discrete forcer electrodes to eliminate any phase error between components of the pattern along the two pickoff axes.