Analysis of shock-response signal of non-driven structure silicon micro-machined gyro

作者：Yan Qing Wen; Zhang Fu Xue^*; Liu Yu; Zhao Hui; Zhang Zhen Ping

来源：Journal of Chinese Inertial Technology, 2012, 20(5): 611-616.

• Angular rate
• Control signal
• Deflection angles
• Large amplitude
• Micro-machined gyroscope
• Shock acceleration
• Shock-response signal
• Single-channel
• Thickness direction

A non-driven structure silicon micro-machined gyro was introduced for the signal-channel control of rotating aircraft. The gyro used the roll of rotating aircraft as a drive, and sensed the transverse angular rate in any direction. The gyro shock test results show that gyro shock-response signal has large amplitude and band width. In practical application, the amplitude above 1.5 V and the width above 100 ms have the ability to block the control signal channel of the rotating aircraft, and affect the normal flight. The analysis on the causes of the shock-response signal shows that the pendulum of gyro deflects about the torsion girder when it is shocked in its thickness direction due to its mass eccentricity. The method of increasing the thickness of the torsion girder of gyroscope was presented to reduce the deflection angle of pendulum under unit shock acceleration. The experiment results show that thickening the torsion girder from 48 μm to75 μm can reduce both the amplitude and width of shock-response signal by about 18 times.

• 出版日期2012