MATLAB codes used in Mathematical Methods for Diff

说明：  matlab计算二阶微分方程，有详细介绍过程，适合新手上路。(Matlab calculates the second-order differential equation, has a detailed description of the process, suitable for novices on the road.)

说明：  matlab高阶谱（双谱）分析直接法和间接法，可用于时差估计等(matlab order spectrum (bispectrum) of the direct method)

good matlab textbook, highly recommended!

双馈电机控制仿真模型模型 矢量控制 现代控制(Double-fed motor control model)

说明：  可以实现复杂环境下的预测，模糊粒计算下的支持向量机(Support Vector Machine Based on Fuzzy Granular Computing and Prediction in Complex Environment)

codes for matlab

说明：  用遗传算法解决旅行商问题(附源代码)，遗传算法其实是一种求函数极值的随机搜索算法。(Solving the traveling salesman problem using genetic algorithms (with source code), genetic algorithm is a kind of extreme demand function of random search algorithm.)

This is an implementation of local binary pattern with some results

可以用这份代码做粒子滤波，效果还行，这个是无迹的算法(This code can be used for particle filtering.)

根据直扩原理，首先有随机数发生器产生一系列二进制信息数据（+1，-1），每个信息比特重复Lc次，Lc对应每个信息比特所包含的伪码片数，包含每一比特Lc次重复的序列与另一个随机数发生器产生的PN序列c(n)相乘。然后在该序列上叠加高斯白噪声和形式为i(n)=Acosw0n余弦干扰下次信号，切余弦干扰信号的振幅满足条件A<Lc。在解调器中进行与PN序列的互相关运算，并且将组成各信息比特的Lc个样本进行求和。加法器的输出送到判决器，将信号与门限值0进行比较，确定传送的数据为+1还是-1，计数器用来记录判决器的错判数目。(According to the principle, first some straight expansion random number generator produces a series of binary data (+ 1-1), each information bit repetitive Lc times, Lc for each information bit contains PN code piece count, embraces each bit Lc times repeated sequence and another random number generator produces PN sequence c (n) multiplication. Then in the sequence superimposed on gaussian white noise and forms as I (n) = Acosw0n cosine interference next time signal, cut cosine interfering signal amplitude satisfy conditions A < Lc. In the modem with the cross-correlation operation PN sequence, and the information will comprise the Lc a sample bits peace. The output of the adder judgment device, will signal to compare with threshold 0 data transmitted, determine for+ 1 or-1, counter is used to record the number victimised judgment. )