(chp4)

脉动风时程matlab程序,风荷载时程曲线的matlab代码，自己找了好久，加上自己的修改，很简单。(Fluctuating wind schedule matlab, the wind load process curve of matlab code when, for a long time, and their own )

编写程序完成不同滤波器的图像频域降噪和边缘增强的算法并进行比较，得出结论,效果很好，多种方法工你选择，文档中包含图片( Image Frequency noise reduction and edge enhancement algorithms to program completion and compare different filters, concluded that the effect is very good, work a variety of methods to choose from, the document contains a picture)

傅里叶变换和小波变换重建图像的比较效果，这个程序可以用来实现四个要求：1、FFT和WT重建效果比较；2、通过改变小波来比较重建效果；3、通过改变分解层数来比较重建效果；4、通过改变大系数个数来比较重建效果。其中还有一个计算PSNR的程序(the comparative effect of reconstruction image by Fourier transform and wavelet transform 。 the program can be used to achieve the four requirements: 1, FFT, and WT reconstruction effect 2, by changing the wavelet to compare the reconstruction effect 3, by changing the decomposition layers to compare the reconstruction effect 4, by changing the number of large coefficient of comparative reconstruction results. Including a procedure of calculating PSNR )

数字识别，通过matlab对0-9几各简单的数字进行识别(Digital identification)

利用顺序消元法和列主元消元法，分别解线性方程组。(Using the order of elimination method and main-element elimination method for solving linear equations, respectively.)

matlab的时频分析源代码，针对小波分析和其他的时频方法，希望对大家有帮助！(time-frequency analysis matlab source code for wavelet analysis, and other time-frequency methods, we want to help!)

关于非线性离散系统辨识，包含位置式PID算法、积分分离式PID，旋转机械二维全息谱计算。( Nonlinear discrete system identification, It contains positional PID algorithm, integral separate PID, Rotating machinery 2-d holographic spectrum calculation.)

说明：  双层优化模型，求解思路是：首先对上层的决策变量编码，代人下层规划模型，通过求解下层模型的决策变量值，代入上层模型计算适应度值，然后进行交叉、变异、选择操作，最后求出最优解(two-layer optimization)

PSCAD实例。希望对初学该软件的朋友有所帮助。(PSCAD instance. Hope that friends of the software for beginners help.)

说明：  小波包去噪，小波包函数调用，小波包用于信号压缩等(Wavelet packet denoising, wavelet packet function call, wavelet packets for signal compression)