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针对EMD经验模态分解不能找到instfreq的问题(For empirical mode decomposition EMD can not find instfreq problems)

利用遗传程序设计建立电力系统的负荷模型，无需像传统方法一样预先确定具体的模型结构，它能根据输入输出数据直接演化出变量间的函数关系，并且能够一次性的同时确定函数的结构形式和参数，使得模型的生成过程趋于智能化、自动化，解决了负荷建模工作中长期困扰的模型辨识问题。(Genetic Programming(GP) is a new evolutionary algorithm based on genetic algorithm,which has self-adaptive,self-organizing,self-learing and other advantages.As a kind of automatic programming technology,it tries to study the computer how to solve the problem according to the objective enviroment automatically without human intervention.)

此程序是基于MATLAB的采用窗函数设计法设计FIR滤波器，内有多种窗函数，包括海明窗，汉宁窗，布拉克曼窗等等(This procedure is based on the use of MATLAB window function design FIR filter design with a multi-window function, including the Hamming window, Hanning window, Blackman window, etc.)

这是直方图均衡化（改进后）的MATLAB程序(This is histogram equalization (improved) MATLAB)

用前推回代法编写了一个算8节点配网潮流的程序，解压后就可以直接运行(With forward and backward substitution method to write an 8-node distribution network power flow calculation program, named after the needs of the non-alphanumeric characters removed after decompression, it can be run directly)

2ASK的链路仿真，信号源的产生，PCM编码，调制解调以及加燥 (2 fsk link simulation signal source, PCM coding and modulation demodulation and dry)

with this code tou can get 2dimonsional fft of image

地杂波雷达的maltab的仿真程序的演示(The places Miscellaneous the radar of maltab simulation program shows)

这是一个详细的matlab中som的使用方法，每一步有详细的注解并伴有图片显示，使大家快速的入门并掌握住(This is a detailed matlab in som way to use each step with detailed comments and accompanied by pictures show, so that we can quickly get up and grasp)

compensation of dead time effect of the inverter dead time effect causes the impact of the control performance of the INVERTER system, and pointed out that the dead time compensation, the key lies in the current phase of the acquisition, in order to overcome the practical zero of the current ambiguity of the system is proposed based on the two-phase stationary coordinate system under the feedforward dead-time compensation method. by the offset voltage of the three-phase output current cycle Fourier transform is found only compensation 1, 5, 7 harmonic components to eliminate the dead time effect. simulation and experimental results verify the correctness and feasibility of this approach.