double-qga

网络的三相计算机潮流案例，基于MATLAB 的计算机潮流及其可视化(Three-phase current case computer networks, computer-based trend MATLAB and Visualization)

有源电力滤波器在产生指令电流时，基于瞬时无功功率的检测方法需要用到低通滤波器，本程序能够实现滑动滤波！(APF generating command current, based on instantaneous reactive power detection methods need to use a low-pass filter, the program can achieve sliding filter!)

kalman递归理论的详细讲解,通谷易懂,想弄明白kalman理论的同志一看便知!(a easy understanding for Kalman theory.it is very useful for new leaner! )

说明：  简单的评分系统 实现去掉一个最高分与去掉一个最低分然后取平均值的运算(Simple scoring system to achieve the highest score and remove to remove a minimum score and then taking the average of a computing)

通过matlab仿真说明从音频中提取背景音乐的方法，并通过dsp实现(Matlab simulation shows that by extracting from the audio background music of the method, and achieved through the dsp)

说明：  递归，是函数实现的一个很重要的环节，很多程序中都或多或少的使用了递归函数。递归的意思就是函数自己调用自己本身，或者在自己函数调用的下级函数中调用自己。 递归之所以能实现，是因为函数的每个执行过程都在栈中有自己的形参和局部变量的拷贝，这些拷贝和函数的其他执行过程毫不相干。这种机制是当代大多数程序设计语言实现子程序结构的基础，是使得递归成为可能。(Recursion, is a function to achieve a very important part of many programs are more or less use the recursive function. Recursive mean that the function of its own call to themselves or subordinates in their own function calls a function to call their own. Recursion that can be achieved because the function of each execution in the stack has its own shape parameters and local variables of the copy, the copy and the implementation process has nothing to do other functions. This mechanism is the most modern programming language implementation subroutine structure of the foundation is to make recursion possible.)

⑴.设计游乐平面图，所含景点不少于10个。以图中顶点表示游乐园各景点，存放景点名称、代号、等信息；以边表示路径，存放路径长度等相关信息。 ⑵．为游人提供图中任意景点的问路查询，及查询任意两个景点之间的一条最短的简单路径。 (⑴. Designed to play plan, contained less than 10 scenic spots. To graph vertices, said the amusement park attractions, attractions store names, codes, and other information to edges, said path, the path length of storage of information. ⑵. To provide the figure for the visitors ask for directions any spots, queries, and query any two attractions of a shortest simple path.)

说明：  粒子群优化算法计算出的PSS优化模型，为四机两区模型(PSS optimization model calculated by particle swarm optimization algorithm)

通过matlab编写代码演奏的卡农，用的基准音，没有加入波形修饰所以音色比较单一(matlab matlab playing playing Khanom Khanom Khanom matlab played)

利用文中命令码，可以在ANSYS中实现如何输入地震波，这对结构动力分析非常重要！(Using text command code, can be implemented in ANSYS how to input seismic wave, which is very important for structural dynamic analysis!)