butterworthfilter

说明：  一般最小二乘及其递归算法的例子及matlab代码(Least squares examples and matlab code)

小波消噪算法我用的小波消噪算法我用的小波消噪算法我用的(Wavelet denoising method I use)

灰色verhust模型的matlab程序在给定一组序列的情况下求得其预测值，残差，相对误差(Gray verhust model matlab program to obtain their predictive value, residuals, the relative error in the sequence of a given set of circumstances)

MATLAB实现振动信号频域处理：随机信号谱分析和利用窗函数实现(MATLAB realization of vibration signals in the frequency domain processing: random signal spectrum analysis and the use of window function to achieve)

传统music算法，六阵元均匀圆阵，远场窄带信号，方位角和俯仰角联合估计(Traditional music algorithm, six-element uniform circular array, the far-field narrowband signal, azimuth and elevation angle joint estimation of)

功率谱估计,包括周期图法，burg法，music法，和welch法，并绘图比较(psd,pmusic，pburg)

说明：  这里包含了几个简单的复杂网络的程序，蛮有用。不过有些程序不是很完美(Here contains a few simple procedures of complex networks, and quite useful. However, some programs are not perfect)

一个单位负反馈系统的滞后超前频域法校正，可直接在matlab中打开和运行(A unit negative feedback system lag correction ahead frequency domain method can directly open and run in matlab)

说明：  ansys matlab 联合优化，进行 传递txt，进行告知优化应力结果，以便传递数据(Joint optimization, transfer txt, inform optimization stress results, so as to transfer data)

Matlab函数edge：边缘检测.输入灰度图像，返回同样大小的二值边缘图像(Matlab function edge: edge detection. Input gray image, return to the same size of the binary edge image)