硅微机械陀螺信号非线性补偿算法及实现

Non-linearity Compensation Algorithm and Realization for the Output Signal of Silicon Micromachined Gyroscope

提出了一种适合无驱动结构硅微机械陀螺信号线性补偿的新算法,通过补偿理论分析、软件程序编写和调试、硬件电路的构建与实现、实际测试的陀螺仪输出信号和实现补偿后陀螺仪输出信号的对比,论证了该非线性补偿算法的可行性。由实验结果证明了该算法的补偿误差较小,精确性很高;同时可消除由载体自转引起的陀螺信号的误差,从而完善了硅微机械陀螺信号处理系统,使陀螺实用化。

One kind of non-linearity compensation technology algorithms for non-drive structure silicon micromachined gyroscope is proposed in this article. Based on the analysis of compensation theory, the programming and the debugging of software ,the design and realization of hardware circuit and the contrast of actual gyro output signal and compensated output signal, the feasibility of non-linearity compensation algorithm is proven. Compensation errors basedon this algorithm are proven to be tiny and the accuracy is proven to be very high by the testing and computational data. This algorithm is confirmed to eliminate the gyroscope signal error which is caused by the carrier rotation. Finally, the peak values of the gyroscope output signal only represent the linear relation with the yaw and pitch velocity so much so that the stability is enhanced. Thus the silicon micromachined gyroscope signal processing system is consummated to make gyroscope utilizable.