FFT_Cycle

一个基本的非负矩阵分解计算程序, 可在Matlab环境下运行.(Algorithms for Non-negative Matrix Factorization)

基于MATLAB利用Particle-in-cell模型,对梯形管内壁等离子体离子注入过程,进行了二维数值模拟.计算结果表明在中心电极附近出现了“阳极鞘层”,该鞘层内部不存在离子,而且在鞘层边缘离子密度最高.在上下管壁上的离子注入剂量呈现“m”形分布.通过对注入过程中等离子体密度分布和不同时间段管壁不同位置离子注入剂量的跟踪,发现“阳极鞘层”扩展行为是导致“m”形分布的原因.由于梯形管形状的不对称性,“阳极鞘层”的边缘向梯形长底方向扩展较快.在注入初始时刻离子注入的能量很低,随着时间延长离子能量逐渐升高,这是由离子初始位置决定的.可见梯形管自身形状决定了鞘层形状和最终的离子注入能量和剂量分布.(Based on MATLAB use Particle-in-cell model, the trapezoidal pipe wall plasma ion implantation process, the numerical simulation of two-dimensional calculation results show that in the vicinity of the center electrode to a "anode sheath," which does not exist inside the plasma sheath, and the highest in the sheath edge ion density ion implantation dose showing the upper and lower walls of the "m"-shaped distribution through the process of injecting the plasma density distribution and the wall at different locations in different time periods ion implantation dose tracking, found that "anode sheath "extension behavior is leading to" m "-shaped distribution of the reasons due to the asymmetry of the trapezoidal shape of the tube," Edge anode sheath "extension to the end of a long trapezoid direction quickly in the initial moment of implantation energy ion implantation is low ion energy with time gradually increased, which is determined by the initial position of the ion. visible trapezoida)

说明：  关键点提取可以用来提取图像的边缘 这个程序还不错 分享下(the key points extraction can be used to extract the edge of the image . This program is good to share)

实现了用DCT变换进行噪声估计的功能，代码已经实现过了，可用哦。(DCT transform noise estimation function, the code has been achieved, can be used.)

标准的IEEE11节点配电网系统电力网络图，两个格式的(Standard IEEE11 node with the grid system electricity network diagram, the two formats)

说明：  现代通信系统 使用matlab 刘树堂译 中文版pdf(The use of MATLAB in modern communication system)

说明：  该算法连续系统的积分分离式PID算法,用MATlab开发，能够管直接运行,当控制量与设定值偏差较大时，取消积分作用，以免积分作用过大引起系统的稳定性降低。(The algorithm of the integral continuous system separate PID algorithm, developed using Matlab and can directly run the tube, when the control volume and settings deviation is larger, the abolition of integral action, so as not to cause too large integral role in the stability of the system lower.)

THis is the QPSK code for MIMO channel. This will give you BER performace

简单的matlab教程，教会初学者matlab的基本应用，初步掌握matlab(Simple matlab tutorial)

直驱永磁同步风力发电机模型，内部有详细的建模细节，可供初学者学习(Direct drive permanent magnet synchronous generator model, a detailed modeling of internal details, for beginners to learn)