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this code to enhanc grayscale images

此代码配套著名教材《通信原理》（樊昌信），有利于初学者更好理解通信原理(This code supporting well-known textbook "Communication Theory" (Fan Changxin), will help beginners to better understand communication theory)

倍福ST语言开发的PID应用范例，里面包括程序和PDF说明(An example of PID application in the development of ST language)

说明：   已知某控制系统结构图如下所示,要求设计校正环节G(s),使系统对于阶跃输入的稳态误差为零。使系统校正后的相角裕量γ≥45°，幅值裕量kg≥10db。(Known structure of a control system as shown below, links to design correction G (s), allowing the system to step input for the steady-state error to zero. The system after correction phase margin γ ≥ 45 °, the amplitude margin kg ≥ 10db.)

国外的一个大牛主页上差分进化的源代码，很有参考价值，有需要的可以看看( Differential Evolution source code which was downloaded from a foreigner’s home page , useful and necessary to look)

基于simulink的Jiles模型参数提取。使用中需使用simulink的parameter estimation功能(Jiles artheron model parameter extraction based on simulink)

说明：  一种新的端点检测方法，对学习语音识别有一定帮助(A new endpoint detection method, has certain help to the study of speech recognition)

用MATLAB编写，采用som网络，来进行归类（随机初始权值）(Written with MATLAB, using som networks to classified (random initial weights))

牛顿法最速下降法共轭发等最计算最优解计算方法 优化作业 简单程序(Newton method)

说明：  PSO工具箱使用简介 方便大家 共同进步(About PSO toolbox to facilitate the use of U.S. common progress)