Signal Detection and Control of Hemispherical Resonator Gyroscopes

Abstract

In this paper, signal detection and control circuits for hemispherical resonator gyroscope(HRG) are designed, simulated and tested. HRG is one of the coriolis vibratory gyroscope(CVG) which has very stable quartz hemispherical resonator and shows very precise performance. HRG signals are usually modulated at the several kHz of resonant frequency. So the general control scheme cannot be applied directly because general control schemes mainly focused at low frequency range. Using demodulated and modulated PI control scheme with the signal detection which is presented in this paper, performance of manufactured HRG has tested.

Development of a Test System for a Hemispherical Resonator and Control of Vibrating Pattern

“…. 본 (6) . Figure 1의 (a)와 같이 정상파가 형성된 상태 에서 외부케이스가 (b)와 같이 반시계 방향으로 45 ()회전 했다면 정상파는 기준점으로부터 시 계방향으로 13.5 (0.3 ) 떨어지게 된다.…”