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说明：  c source Code for arthmetic

PCA技术的一大好处是对数据进行降维的处理。我们可以对新求出的“主元”向量的重要性进行排序，根据需要取前面最重要的部分，将后面的维数省去，可以达到降维从而简化模型或是对数据进行压缩的效果。同时最大程度的保持了原有数据的信息。 (A major advantage of PCA technology is reduce the dimension of the data processing. We can calculate the new " principal component" vector order of importance, according to need to take the most important part of the front, eliminating the rear of the dimensions, dimension reduction can be achieved to simplify the model or the effect of data compression . At the same time maintaining the greatest degree of the original data.)

SINUSOIDAL ASYMETRIC PWM MODULATION BASED 3-PHASE INVERTER

"Teaching antiwindup, bumpless transfer, and split-range control"一文的仿真程序实现，可以用于仿真教学。("Teaching antiwindup. bumpless transfer, and split-range control, "a text of the simulation program. Simulation can be used for teaching.)

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)

利用MATLAB制作合成音乐播放，可以作为GUI插入的背景音乐，歌曲为一闪一闪亮晶晶，供给初学者参考(Using MATLAB to make synthetic music playback, can be used as a GUI insert background music, songs to twinkle twinkle little star, to supply reference for beginners)

判断半正定矩阵与正定矩阵间的一种新的准则，gky方法是判定系统是否稳定的一种很有效的方法，里面有源代码和相应文档(Judge half positive definite matrix and the positive definite matrix, a new criterion between gky method is to determine whether the system stability of a kind of very effective method, there are source code and documentation accordingly)

让程序直接运行，就可以让matlab唱歌(Let directly run, you can let matlab singing)

利用重心法提取光条中心,激光光条中心提取(light stripes center extraction)

cross-validaton procedure svm(crossvalidatonprocedure)