预报误差法参数辨识-松弛的思想，分析了该信号的时域、频域、倒谱，循环谱等,利用matlab GUI实现的串口编程例子，IDW距离反比加权方法，最终的权值矩阵就是滤波器的系数，使用拉亚普诺夫指数的公式。-Prediction Error Method for Parameter Identification- the idea of relaxation, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Use serial programming examples matlab GUI implementation, IDW inverse distance weighting method, The final weight matrix is ??the filter coefficient, Raya Punuo Fu index using the formula.