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说明：   用最速下降法求最优化解 输入：f为函数名 grad为梯度函数 x0为解的初值 TolX,TolFun分别为变量和函数的误差阈值 dist0为初始步长 MaxIter为最大迭代次数 输出: xo为取最小值的点 fo为最小的函数值 f0 = f(x(0))( Steepest Descent Method with Optimum Solution input: f as a function name grad is gradient function x0 for the solution of the initial TolX, TolFun variables and functions were error threshold dist0 as the initial step MaxIter maximum Diego passage number Output: xo to take the minimum point of fo is the smallest function value f0 = f (x (0)))

通过matlab编程实现了通信原理中的模拟频率调制（FM)，并画出了波形。(this source code can realize the fm modulation in communication principles.)

电力电子、电机控制系统仿真模型，包括异步电机及同步电机(Power electronics, motor control system simulation models, including the induction motor and synchronous motor)

simulation model for Pv

说明：  一个比较好的垂直切换算法，提供了两种切换算法，并进行MATLAB算法仿真(A better vertical switching algorithm, provides two switching algorithm, and the MATLAB algorithm simulation)

LFM信号的分数傅里叶变换分析，包含LFM信号分数阶谱图产生及FrFt子程序，及峰值搜索。非常好(LFM signal s fractional Fourier transform, including the LFM signal generation and FrFt fractional spectrum of subroutines, and peak search. Very easy to use.)

关于合成孔径雷达聚束成像模式的一个仿真程序，效果比较理想(a code of matlab descre the spotlit imagnation of SAR)

to compute sppede up robust in matlab

the thesis put forwards three detection methods.the thesis analyzes and compares them on voltage distortion effects, real-time character, application of use and complexity of algorithm , The thesis has done the real-time dynamic simulation using the MATLAB software ,which is based on three detection methods , and the results show the correctness of active filter scheme, and advantages and disadvantages of three detection methods.

语音识别基于隐形马尔科夫算法，进行特定的汉字识别(Speech recognition based on hidden Markov algorithm, make specific character recognition)