Vibratory rotation sensor

摘要

In a vibrating rotation sensor (10) of the hemispherical resonator gyro type (HRG), operating in the whole angle mode wherein the standing-wave components are measured to provide a measure of the pattern angle, the digital signal processor (74) functions to control the digital to analog converter (82) output signal in order to keep the highly amplified analog to digital input signal, the difference between the pattern angle and excitation angle, within the analog to digital converter window. The analog to digital converter window is set at n times the discrete level of the digital to analog converter. A digital feedback loop in the digital signal processor continually corrects the tracking angle to control the excitation voltage.