matlabtool

matlab的课件三，以前上传了两个加这个就全了(matlab)

设r是f(x) = 0的根，选取x0作为r初始近似值，过点（x0,f(x0)）做曲线y = f(x)的切线L，L的方程为y = f(x0)+f (x0)(x-x0)，求出L与x轴交点的横坐标 x1 = x0-f(x0)/f (x0)，称x1为r的一次近似值。过点（x1,f(x1)）做曲线y = f(x)的切线，并求该切线与x轴交点的横坐标 x2 = x1-f(x1)/f (x1)，称x2为r的二次近似值。重复以上过程，得r的近似值序列，其中x(n+1)=x(n)－f(x(n))/f (x(n))，称为r的n+1次近似值(Let r is f (x) = 0 root, select the initial approximation x0 as the r, over point (x0, f (x0)) to do the curve y = f (x) the tangent L, L the equation y = f ( x0)+ f ' (x0) (x-x0), find the intersection of L and the x-axis of abscissa x1 = x0-f (x0)/f' (x0), x1 is called an approximation r. Through points (x1, f (x1)) to do the curve y = f (x) the tangent, and find the intersection of the tangent with the x-axis of abscissa x2 = x1-f (x1)/f ' (x1), x2 is called r the second approximation. Repeat the process, get an approximation of the sequence r, where x (n+1) = x (n)-f (x (n))/f ' (x (n)), as an approximation of r n+1 times)

基于MATLAB的FFT谐波频谱分析，利用FFT变换算法进行谐波的频率和幅值的变化分析，利用图形分析结果。(MATLAB-based FFT harmonic spectrum analysis using FFT transform algorithm changes the frequency and amplitude of the harmonic analysis, the use of graphical analysis results.)

有關於pso的程式 這裡並沒有用到速度會任何inertia 參數(This is an accelerated PSO (APSO). APSO does not use velocities or any inertia parameter. A full program for solving nonlinear constrained optimization problem (welded beam design as an example) is provided, which can be extended to solve other continuous optimization problems.)

粒子滤波算法；粒子滤波算法源于Montecarlo的思想，即以某事件出现的频率来指代该事件的概率。因此在滤波过程中，需要用到概率如P(x)的地方，一概对变量x采样，以大量采样的分布近似来表示P(x)。因此，采用此一思想，在滤波过程中粒子滤波可以处理任意形式的概率，而不像Kalman滤波只能处理高斯分布的概率问题。他的一大优势也在于此。(these codes are particle filter resources codes which solve non-linear estimation problems.I wish that it is helpful to some people.I am glad to share it with others. )

numerucal methods to solv deff equations

给Matlab配套的电力工具箱POWERSYSTEM的最全的使用手册，一共一千多页，POWERSYSTEM中所有的DEMO都有详细介绍，是学习电力工具箱的精品资料(Matching of electricity to Matlab toolbox POWERSYSTEM the most comprehensive user manual, a total of more than 1000 pages, POWERSYSTEM have all the details of DEMO is to learn the power of quality information toolbox)

QAM调制与解调基本功能的实现与仿真，包括了编码、信道、译码部分(QAM modulation and demodulation implementation and simulation of basic functions, including coding, channel decoding section)

Field oriented control of induction motor

This is a multi-level voltage svpwm space vector control algorithm for motor controlThis is a multi-level voltage svpwm space vector control algorithm for motor controlThis is a multi-level voltage svpwm space vector control algorithm for motor control