微机械陀螺仪的性能分析

研究了微机械振动轮式陀螺仪的工作原理和实现方法，提出了保证测量精度，提高动态测量带宽的闭环控制系统。从动力学模型出发，推导此类陀螺的检测输入角速度灵敏度，开环、闭环传递函数，交流反馈控制提取同相分量和抑制正交分量的原理，以及闭环控制改善动态测量频带的方法。分析指出，对于中等精度的微机械陀螺，采用静电力再平衡回路控制是必要且可行的。

Performance analysis of a vibratory wheel micromechanical gyroscope

This paper introduces the principle, sensitivity of the micromachined vibratory wheel rate gyro and develops a close loop control system to improve the accuracy as well as the dynamic properties. On the basis of the dynamic model, the performances of this gyroscope, including the sensitivity, open loop and close loop transform functions of detecting inertial rate are derived. AC feedback control to extract the in phase component and orthogonal component from original signal is presented, and the method of using close loop control to improve the dynamic measurement bandwidth is given. The analysis shows that the electrical static force rebalance control is not only necessary but also available for the gyroscope system.