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Program is used to integrate a surface using data points in cylindrical coordinates. Some errors exist that compromise the solution.

说明：  一个关于运算器的程序和添加镜面效果的，分享一下！多提意见啊！(A program on the calculator and add mirror effect, the share! Speak up ah!)

电机模型 可以用于电机的matlab仿真 为m文件 直观方便(Motor model can be used for motor simulation matlab m files for easy and intuitive)

rectifier power electronics system

This paper shows how electrical engineering undergraduates can acquire a working knowledge of the finite element method (FEM) within a short period of time using MATLAB. For simplicity, only first-order triangular elements are considered. The scalar wave equation for homogeneous isotropic waveguides is used for introducing the FEM. Simple waveguide problems, including a design problem, are discussed as examples. It is shown how the knowledge acquired can be extended to other electromagnetic problems

JADE差分进化的变异算法，针对不同的规模，差分进化算法的性能是不同的，这是另一个变异，有需要的请下载(Variation of differential evolution algorithm, for different scale, the performance of the differential evolution algorithm is different, this is another variation, the need to download the)

老师布置的作业几何图形的特征识别分类中心提取以及圆形的圆心半径参数的确定(Teacher assignments geometry feature recognition extraction and classification center center circle radius to determine the parameters)

说明：  Matlab地震波显示程序 Matlab的矩阵数据类型与地震波数据类似 (Matlab seismic display program Matlab matrix data types and seismic wave data similar)

Speech Enhancement Using Spectral Substraction

利用Matlab仿真软件，完成如图1所示的一个基本的数字通信系统。信号源产生0、1等概分布的随机信号，映射到16QAM的星座图上，同时一路信号已经被分成了实部和虚部，后边的处理建立在这两路信号的基础上。实部、虚部信号分别经过平方根升余弦滤波器，再加入高斯白噪声，然后通过匹配滤波器（平方根升余弦滤波器）。最后经过采样，判决，得到0、1信号，同原信号进行比较，给出16QAM数字系统的误码。(Using Matlab simulation software, as shown in Figure 1 to complete a basic digital communications systems. Signal source such as arise over the distribution of 0,1 random signal, is mapped to 16QAM constellation diagram, at the same time all the way the signal has been divided into real and imaginary parts, behind the deal with the establishment of these two signals in the basis. Real part, imaginary part of the signal, respectively, after a square root raised cosine filter, then add white Gaussian noise, and then through the matched filter (square root raised cosine filter). Finally, after sampling, the verdict has been 0,1 signal, to compare with the original signal is given 16QAM digital system error.)