zhixin

说明：  采用继电法对PID参数进行整定，实现PID参数的获得(Method using relay tuning PID parameters, PID parameters to achieve access to)

实现Lorenz混沌的simulink 程序。利用matlab的模块设计，可以很好的实现lorenz混沌。(Simulink realization of Lorenz chaotic process. Using matlab modular design, can achieve a good lorenz chaotic.)

说明：  有EEMD分解的源程序，可求解分量信号的能量熵(Source program containing EEMD to solve the energy entropy of component signals)

tpdf是计算学生t分布概率密度的函数，在金融数值模拟中有广泛应用。(tpdf is calculated Student' s t-distribution probability density function, there are widely used in the numerical simulation of finance.)

matlab俄罗斯方块程序，，非常真实的界面，MATLAB_GUI设计多多学习(Tetris matlab procedures, very real interface, MATLAB_GUI design a lot to learn)

说明：  从信号估计和频谱分析的观点分析了LMS算法,提出了LMS算法应具有低通性能的观点,并给出了求取算法收敛因子的公式。(In this paper, the LMS algorithm is analyzed from the viewpoint of signal estimation and spectrum analysis. The viewpoint that the LMS algorithm should have low-pass performance is put forward, and the formula for calculating the convergence factor of the algorithm is given.)

zxb:提取wav波得语音声学特征MFCC，以及用praat提取wav波的基频。(zxb: extract acoustic features of voice wav wave was MFCC, and extracted with praat wav wave fundamental frequency.)

power_steppermotor.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_steppermotor.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

计算高斯Hermite多项式的Matlab程序，并绘制2维和3为高斯Hermite多项式图。(Gaussian Hermite polynomial calculation Matlab program, and draw two-dimensional and three Gaussian Hermite polynomial map.)

求解第一类贝塞尔函数的解，主要根据初始精度设置，来调整找根的效率，仅供参考。(Solving the first kind of Bessel function of solution, mainly based on the initial accuracy Settings, to adjust to find a efficiency, is only for reference.)