add2database

应用bp神经网络进行分类的实例，很简单适合初学者。(Application of bp neural network to classify instances, is very simple for beginners.)

说明：  communication matlab

模糊核聚类算法的几篇论文及matlab源码，可以以练代学，更好掌握模糊聚类方法。(Fuzzy Kernel Clustering Algorithm matlab several papers and source code, can be practicing on behalf of science, to better grasp the fuzzy clustering method.)

this file include matlb code for face detection

IIR滤波器模拟巴特沃斯滤波器，并可观察期幅频和相频曲线(IIR filter simulation Butterworth filter, and can be observed on the amplitude frequency and phase-frequency curve)

Code for nonlinear equations solution

analysis( graphical and parametric ) of 1st-order , 2nd-order & nth-type systems (This Program Includes :::::::::::: 1:: Analysis of 1st order systems for 1.step signal ,2.ramp signal, 3. Accelaration signal. 2:: Analysis of 2nd order systems for 1.step signal, 2.ramp signal. 3:: Frequency analysis of 2nd order systems. 4:: Steady State Error Analysis of "0th" , "1st" , "2nd" type systems. 5:: Performance Indices of a System. )

基于MATLAB实现了极坐标下的傅里叶变换，对一个给定 n×n 的二维信号，其计算复杂度等价于笛卡尔坐标下的2D-FFT，可广泛应用于图像处理和分析。(A fast high accuracy Polar FFT algorithm is given in the software package written in MATLAB. For a given 2D signal of size n×n, the algorihtm s complexity is just like in a Cartesian 2D-FFT, which can be used widely in image processing and analysis.)

This file is very important for student ....

说明：  齿轮信号在matlab环境下的产生(matlab程序源代码)(creating gear signals )