一种圆锥壳型振子式陀螺的信号提取方法

针对一种具有圆锥壳型敏感结构的固体振动陀螺提出了一种信号提取方法，这种圆锥壳型敏感结构取消了电极间的隔离孔.首先对陀螺原理进行了分析，设计了陀螺的硬件处理系统和软件算法.振子激励信号通过独立的DDS模块产生.振动信号经模拟滤波器处理后被采样，在DSP中完成控制与解算.讨论了取消隔离孔后敏感轴电极的正交干扰问题，结合实验结论，提出利用振动信号的相位信息计算输入角速率，为新型谐振陀螺的制作提供参考. 

A Signal Extraction Method for Vibratory Gyro with the Conical Shell Resonator

In this paper, a signal extraction method of solid vibratory gyro with conical shell resonator was presented. This kind of conical shell resonator removed the isolation holes between piezoelectric electrodes. Firstly, the principle of the gyro was analyzed. Then the gyro''s circuit system and algorithm was designed. The vibration excitation part took an independent DDS module as an accurate excitation signal source. The vibration signal was sampled after treating with analog filter. The vibration controlling and angular calculating were finished in DSP. The orthorhombic interference signal, which caused by the electrodes on sensing axis of the resonator without the isolation holes, was analyzed. According to the result of experimentation, a way can be presented to calculate the input angular speed by using the phase angle of vibration signal. The research achievement can provide a reference for a new vibratory gyro.