cruise_control_PI

传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.下图是用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。该代码实现了以下功能： 1) 借助MATLAB画出了滤波器的误差性能曲面和误差性能曲面的等值曲线； 2） 给出了最陡下降法以及LMS算法的计算公式； 3） 用MATLAB产生了方差为0.05, 均值为0白噪音S(n)，并画出某次采样得到的波形； 4） 根据 2）中的公式，并利用 3）中产生的S(n)，在 1）中的误差性能曲面的等值曲线上叠加画出了采用最陡下降法以及LMS法时H(n)的在叠代过程中的轨迹曲线； 5）用MATLAB计算并画出了LMS法时误差随时间n的变化曲线（对应S(n)的某一次的一次实现）和e(n)波形； 6）在 1）中的误差性能曲面的等值曲线上，叠加画出采用LMS法得到的100次实验中的H(n)的平均值的轨迹曲线； 7）最终对结果进行了分析，具体见压缩包的word文档。 (Wideband signal in the conventional sinusoidal interference suppression method is the use notch filter (notch filter), this requires precise knowledge of the frequency of a sinusoidal interference . However, when the interference frequency sinusoidal changes slowly , and the selected frequency characteristic requirements are very sharp , then best use of adaptive noise cancellation method . following figure is a second-order FIR LMS adaptive filter to eliminate a program sinusoidal interference . The code implements the following functions:   A ) draw with MATLAB error performance of the filter surface and the surface contour error performance curve 2 ) gives the steepest descent method and the LMS algorithm formula 3 ) generated using MATLAB variance of 0.05 with a mean of 0 white noise S (n), and draw a particular sampling waveform 4 ) based on 2 ) of the formula , and use 3 ) generated in S (n), in a ) the error performance curves superimposed on the surface contour pl)

田纳西伊士曼过程的数据，可以用于故障诊断方法的验证(TE process data for fault diagnosis)

给出了(2,1,3)卷积编码和维特比译码的源程序(Given (2,1,3) convolutional coding and Viterbi decoding of the source)

A股市场WIND数据库技术指标日时间序列矩阵导出(Export Database technical indicators day time series matrix A-share market WIND)

多项式拟合，对一群散点，采用最小二乘法进行多项式拟合(Polynomial fitting, a group of scattered points, using the method of least squares polynomial fitting)

基于Matlab和ActiveX技术的数字信号处理教学演示系统(Matlab based on ActiveX technology and digital signal processing teaching demonstration system)

说明：  《模糊逻辑》（Fuzzy Logic）一书的例子程序，作者： Reza Langari("fuzzy logic" (Fuzzy Logic), an example of the procedure, the authors : Reza including)

Draws a horizontal line on the current axes at the location specified by y . Optional arguments are linetype (default is r: ) and label , which applies a text label to the graph near the line. The label appears in the same color as the line.

it s backpropagation neural network for iris data set

阵列信号中虚拟变换的程序，主要对MVDR进行了虚拟变换进行仿真，很好用。(Array signal the virtual transformation process)