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PCA人脸识别算法，识别率达到99 ，采用小波变换的方法及主成分分析法。(PCA face recognition algorithm, the recognition rate up to 99 , using wavelet transform methods and principal component analysis.)

说明：  利用RBF神经网络实现混沌预测，并结合matlab进行仿真，较好实现其功能(Realize the use of RBF neural network prediction of chaos, combined with matlab simulation, better realize its function)

判断图的连通性，有warshall和矩阵幂判断两种方法。(To determine the connectivity of the graph)

蒙特卡洛的原理,其中讲了一些简单的例子，适合初学者(monte carlo simulation with matlab )

GM预测模型代码，可实现实时滚动预测，并带有输入输出界面(GM forecast model code, enabling real-time rolling forecasts, and with input and output interface)

说明：  这是一个可以实现ARIMA的预测程序，程序有标注，好理解。(This is a prediction program that can realize Arima. The program is labeled and easy to understand.)

演变过程 自抗扰控制器自PID控制器演变过来，采取了PID误差反馈控制的核心理念。传统PID控制直接引取输出于参考输入做差作为控制信号，导致出现响应快速性与超调性的矛盾出现。(In the process of evolution, ADRC evolves from PID controller and adopts the core idea of PID error feedback control. Traditional PID control directly draws the output from the reference input as a control signal, which leads to the contradiction between response speed and overshoot.)

此模型为光伏单相发电matlab模型，MPPT算法为扰动观察法(This model is the MATLAB model of single phase photovoltaic power generation, and the MPPT algorithm is a disturbance observation method. )

说明：  本文件为深圳杯数学建模大赛D组题目的全部相关程序，没有题目 只有解答过程和程序~已经把数学问题精炼出来了(This document is all related procedures for group D questions of shenzhen cup mathematical modeling contest. There are no questions, only the solving process and procedures. The mathematical problems have been refined.)

matlab实例 很多是例子适用于新手练习和调试程序。(matlab examples of many examples of practice applicable to novice and debug procedures.)