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数值分析及其Matlab实现，包含有部分程序和课件。(Numerical Analysis and Matlab implementation, contains some of the procedures and courseware.)

说明：  用于进行变量降维的matlab程序，大家可以试一试，很有效哟(Variable Reduction Testbench MATLAB modules，it is very effective， we can try, very effective ..............)

说明：   duhen迟滞模型的MATLAB语言实现，这是自己对照duhen迟滞模型的数学表达式编写的，已经运行过，完全正确(On the hysteresis)

this code is for sugar test .............................

MATLAB提供了各种曲线拟合方法，例如：Exponential, Fourier, Gaussing, Interpolant, Polynomial, Power, Rational, Smoothing Spline, Sum of Functions, Weibull等，当然，也可以使用 Custom Equations. cftool不仅可以绘制拟合后的曲线、给出拟合参数，还能给出拟合好坏的评价参数(Goodness of fit)如SSE, R-square, RMSE等数据，非常好用。但是如果我们已经确定了拟合的方法，只需要对数据进行计算，那么这种GUI的操作方式就不太适合了，比如在m文件中就不方便直接调用cftool。 (matlab has given a lot of method for curve combine ,we will give a new method and provide a matlab code.)

混沌系统的控制、庞家莱截面、分岔图、解微分方程相关程序(Chaotic system control, Pangjiayai section, bifurcation diagram, solution differential equation related program)

卡尔曼滤波 可以对目标进行跟踪，数据处理 滤波(Kalman filter can track the target, data processing filter)

基于改进滑模频率偏移法的光伏孤岛检测研究(PV islanding detection based on improved sliding mode frequency offset)

用matlab脚本文件实现的位置式及增量式PID控制算法程序(using Matlab script file to achieve the type and location of incremental process PID control algorithm)

for fiber focus ratio degradation