ex6

目前，互联网上HHT信号处理技术有 三种实现方式，采用MATLAB编程语言，一种是法国研究者设计的G Rilling 2007 另一种是MATLAB文件交换中心由Alan Tan开发的plot_hht程序包，第三种是台湾中央大学数据研究中心提供的EEMD包。 其中，我使用了plot_hht程序包，其使用了三个终止条件，驻留分量的单调性，极值点与零点的个数相差不超过1，还有黄锷1998经典文献提出的 SD>0.1，单调性的判断，并不是去判定驻留分量是否是单调函数，而是当曲线是双曲线时，循环结束，由于没有考虑端点效应，程序比较简洁，好读懂，大家 学习HHT可以从这个程序包入手，在此抛砖引玉，希冀有人能比较这三种不同的算法的性能和时间复杂度，以及对各种信号的适应性。 (There provides three types of HTT program packages: one developed by France researcher G. Rilling 2007, the other provided by by Alan Tan from Matlab file exchange center and the third one by Taiwan Central University Data Research Center. Please start from the simple one by Tan to learn more.)

非线性整数规划图形工具 BNGUI Runs a GUI for BNB18 Usage: BNBGUI or BNBGUI(file) (Nonlinear integer programming graphical tools BNGUI Runs a GUI for BNB18 Usage: BNBGUI or BNBGUI (file))

此程序实现的是四幅不同曝光图像的图像融合，它使用分块的方法，比较各个块的熵值，然后，由熵值最大的块组成图像。(To achieve the function of this program is four different exposure image fusion image first four image block is to compare their entropy values, select the entropy of a larger block composite image .)

matlab图像刻画曲线时用到的曲线拟合，平滑处理(smoothing process)

It can be applyed forthe Spectral Element Method conbined finite element and spectral method to solve the 2D wave equation.as a pecial case is SH. dynamic fault with slip weakening is considered either.

this source code is a simple peer to peer program that enables user to contact each other directly

PWM斩波器的设计模型与SIMULINK实现(PWM chopper design model implementation and SIMULINK)

基于Matlab的捷联惯导轨迹发生器，希望给大家有所帮助(Strapdown inertial navigation trajectory generator based on matlab。May be help to you)

Jacobi迭代法和Gauss-Seidel迭代法求解线性方程组，matlab语言编程。(Jacobi iteration method and Gauss-Seidel iteration method for solving linear equations, using the Matlab programming language.)

基于MATLAB平台的PWM调制正弦波的快速傅里叶分析(his model simulates and computes Fourier analysis of PWM based sinusoidal waveform. Fundamental frequency can be changed in model properties. Amplitude modulation index and frequency modulation index can be adjusted in Simulink model directly.)