pec

这是一个半导体激光器弛豫振荡现象的仿真程序，计算参数和速率方程模型都取自经典教材Semiconductor Lasers(Agrawal 著)，可以作为学习和进一步研究半导体激光器各种动态特性的基础材料。(This is a simulation program by Matlab for calculating the oscilating in semiconductor lasers, in which the rate equation model and the parameters used are all from the classic technical monograph by Agrawal. This could be a basic material for further investigating and studying different dynamic activities of semiconductor lasers. )

国外程序员开发的pls工具箱，功能非常强大。希望对大家有用！(The development of foreign programmers pls toolbox, very powerful. )

ppt for matlab notes

学习现代控制理论的经典教材 结合matlab 之前 一定要好好看看(Study of modern control theory of the classic textbook binding matlab before must be good to have a look)

两个频率的凹口滤波对消干扰噪声，效果很好。希望大家仿真实验。(Two frequency notch filter to eliminate interference noise, the effect is very good. I hope everyone simulation experiments.)

about nuclear reactor and control of them. it is presented a new method

说明：  该文件提供了基于图像颜色特征检索的源代码(this artical provides the code based of the color of a image)

研究闭环算法的优越性，从开、闭环算法的迭代次数相比较，看出闭环优越(Study of closed loop algorithm, from the opening, closed loop iteration times are compared, see closed-loop superior )

齿轮系统动力学程序，非常有用，一共十级,vell good(Gear system dynamics program, very useful, a total of several levels)

说明：  这个水印一般般利用DWT变换和DCT变换嵌入水印，加上了Arnold变换使图片水印的抗MP3压缩攻击有所提高。(The watermark in general as the use of DWT transform and DCT transform embedded watermark, coupled with the Arnold transform to image watermarking against MP3 compression attacks increased.)