【摘要】 为了提高微石英音叉陀螺检测角速度信号的性能,提出了一种应用于微石英音叉陀螺角速度信号的最小均方(leastmean square,LMS)解调算法。通过在Systemview通信软件里对LMS算法进行仿真,仿真结果表明此算法可以解调调幅角速度信号,可滤除其他噪声;在DSP里实现LMS算法,通过大量速率测试显示与传统相关解调比较,LMS解调算法的零位稳定性比相关解调提高了50.16%,分辨率也有提高。仿真和测试结果表明LMS算法应用在陀螺角速度信号的解调中能收到比相关解调更好的效果。更多还原

【Abstract】 To improve the performance of the micro-quartz tuning gyroscope,a least mean square(LMS) algorithm for demodulating the micro-quartz tuning gyroscope output signal is proposed.The simulation in the Systemview showed that the LMS algorithm can demodulate the amplitude modulation angular signals,filter the noises.The method is implemented and tested in the digital signal prossesor(DSP),the experimental results show that the LMS algorithm has better stability of zero-position than the traditional coherent demodulation algorithm,the stability is improved by 50.16%,and the resolution is increased as well.The LMS algorithm is applied to demodulate the angular signal,and gets a better result than that of the multiplicative demodulation.更多还原