segment

通过此代码实现萤火虫算法仿真，改变函数，即可实现不同的函数结果。(This code implements the firefly algorithm simulation, change the function, you can achieve different function results.)

数学建模matlab算法大全，包括各经典模型及其算法的matlab代码(Matlab algorithm of mathematical modeling, including the classic model and its algorithm matlab code)

使用定义法来求解李亚普指数，此为最基本的李亚普指数求解方法。(Defined to solving Li Yapu index, this is the most basic the Li Yapu index solution method.)

适用于matlab 的图形旋转代码，可自定义旋转角度，使用邻近插值不全图像(Applicable to matlab graphical rotation code, the rotation angle can be customized using the neighbor interpolation incomplete picture)

这是TD算法的逆过程，首先将时间序列，划分为相邻点的短序列，当然此时的拟合误差为0，因为第一点和第二点的连线，原始点都落在线段上。将相邻两个线段连接起来，此时每条线段包含三个原始点，计算中间那个点的拟合误差。这样，所有这些三个点的线段中的中间点的拟合误差计算出来后，找出误差最小且误差小于阀值R的分段，作为第一条包含三个点的线段。 在上面的基础上，第一条分段同样的和相邻线段连接，然后计算每一条分段的拟合误差，再找出误差最小且小于阀值R的分段，作为第二个分段。依次方式循环，直到所有分段的拟合误差都小于阀值R，分段结束。 (This is the reverse process of TD algorithm, the first time series is divided into short sequences adjacent dots, of course fitting error is zero at this time, because the first and second points of connection, the original point fall line on. The two adjacent segments are connected, then each segment contains three original point, the intermediate fitting error calculated that point. Thus, after all these segments fitting error of three points in the intermediate point calculated to find the minimum error and the error is less than the threshold R segment, as the first line contains three points. Based on the above, the first segment and the adjacent line segment connecting the same, and then calculate a fitting error for each segment, and then find the smallest error and less than the threshold R segment, as the second segment . Followed by a cyclic manner until all segments fitting error is less than the threshold R, segment ends.)

backpropagation code

The matlab codes for adaptive filtration and echo-cancelleration, codes using LMS, RLS, DFT, Subband filtration.

说明：  是矢量控制的仿真，用matlab6.5做得(Simulation of vector control is used to do matlab6.5)

三相光伏并网simulink仿真模型，包含PV模型和网侧控制模型(Simulink simulation model for three-phase photovoltaic grid, including the PV model and the network side of the control model)

用matlab编写的欧拉方法求解常微分方程：数值分析中很经典的代码(a procedure of Euler method solve pde )