无驱动结构硅微机械陀螺的信号处理

Signal process for the non-drive silicon micro-machined gyroscope

由于无驱动结构硅微机械陀螺输出信号较为特殊,应用这种特殊陀螺存在较大难度,为解决这一问题,从无驱动结构硅微机械陀螺的信号分析出发,根据其信号的特征提出用加速度计信号反映载体自转信号为基准,并以其作为参考信号解调陀螺信号的处理方法。软件上采用峰值检测和相位比较解调的算法,利用单片机实现该算法。同时设计相应的外围硬件电路,最终得到了一个能实时解调出陀螺信号得出陀螺的偏航和俯仰角速度值的信号处理系统。该系统由于引进了加速度计波形被调制带来的误差,其精度有待进一步改善。

From the analysis for the signal of the non-drive silicon micro-machine gyroscope, the acceleration signal which reflects the carrier＇ s rotation information is used as the benchmark. Upon this reference, and the peak-value measurement algorithm and phase comparison algorithm,the signal of the gyroscope can be demodulated. The MSC1214Y3 is used to carry out this algorithm. At the same time the peripheral circuit is designed and finally the leeway and pitching angle velocity is obtained.