2_POWER-QUALITY

K-L特征压缩器的原理是利用K-L变换的优良性质,即K-L变换可消除原向量各分量间的相关性。(KL compressor characteristic is the use of KL transform the principle of good nature, that the original vector of KL Transform to eliminate the correlation between the various components.)

hppc实验的数据分析，重要参数的提取，本代码适用于二阶等效电路，可以计算其中的串联电阻，并联的RC电路中的参数的值是多少，另外可以提取相应的每一个步骤所对应的开路电压，电流，以及对应的实验的时间。(hppc experimental data analysis, extraction of important parameters, the code for the second equivalent circuit can be calculated as one of the series resistance of the parallel RC circuit of the value parameter, the other can extract the corresponding corresponding to each step The open circuit voltage, current, and time of the corresponding experiments.)

matlab 学习过程中常见的一些函数的使用方法(the description of the commen functions in matlab)

说明：  利用matllet算法的小波消噪程序 噪音区间可以自定义(Matllet algorithm using wavelet denoising process noise interval can customize)

图像插值算法（最近邻域和双线性），很好用。(image interpolation algorithm (recent neighborhood and bilinear), is useful.)

说明：  逆变器采用PQ控制，实现并网时的功率控制，可单位功率因数运行(use PQ control)

tow combination or binomial coefficient, factorial and sort function

Many source code for bootstrap technics developped in matlab are presented in attached files.

Back propagation neural network for blasting PPVV prediction

利用小波分解得到各尺度上的信号，再积分求取各尺度上的能量，可用于故障诊断(Signal using wavelet decomposition on each scale, and then strike points on each scale energy can be used for troubleshooting)