matlab-IGBT--spwm

说明：  一个使用matlab进行音频信息处理的实例，对输入的语音信号，进行合成与分析。(Using matlab audio examples of information processing, the input voice signal, to carry out synthesis and analysis.)

t检验，通过多样的分析可以得出想要的熵结果。(t-test.you can download it every day.)

本书将通信技术用代码的形式表现出来，读者可以通过代码来加深对理论知识的理解。(This book will use the code shown in the form of communication technology, the reader can through the code to deepen the understanding of theoretical knowledge. )

信号的二阶累积量估计,cum2函数为互二阶累积量估计，cum2est函数为单个向量的二阶累积量估计(The second order the cumulative estimated cum2 function for mutual order cumulants estimated cum2est function as a single vector order cumulant estimation)

eflrls算法给大家分享，请大家支持(eflrls algorithm to the U.S. to share, please support the U.S.)

：为了提升自动控制原理课程的教学质量，改善解决课程中计算复杂、公式繁杂、难以理解等问题，我们将Matlab 仿 真技术运用于这门课程中，这款软件有助于提高学生的主动性和兴趣，促进学生分析理解问题和解决问题的能力。文章 主要介绍了Matlab 的概述和特点，Matlab 仿真技术在自动控制原理课程教学中的应用和实例等内容。(: In order to improve the quality of teaching automatic control theory courses, courses to improve the computational complexity of solving the formula complicated, difficult to understand and so on, we will Matlab simulation technology used in this course, this software helps improve students' initiative and interest, promote students' ability to analyze and understand the problem and solve the problem. The article describes an overview of the content and features of Matlab, Matlab simulation technology in teaching automatic control theory and examples of applications and so on.)

主要包括用重标极差法计算Hurst指数并绘制双对数图(Including the rescaled range method (R/S analysis) to calculate Hurst exponent, function and caller)

BP神经网络容易陷于局部极小值，PSO算法在无约束非线性函数优化方面性能优越，通常可以直接找寻到全局最优解，即使不能搜多到全局最优解，也距离全局最优点不远。当然，基本PSO算法陷入局部极值也是有的。对于这个缺点目前还没有找到比较有效、省市的解决方案。本案例实现利用PSO算法和BP算法共同训练神经网络，先将网络进行PSO算法训练，然后BP算法接着进行小范围精细搜索，PSO算法训练神经网络的本质就是将输出误差函数（即能量函数）看成目标函数，PSO对能量函数进行全局寻找最小值。(BP neural networks are prone to local minimum values. The PS algorithm has superior performance in the optimization of unconstrained nonlinear functions. It can usually find the global optimal solution directly. Even if it can not find more global optimal solutions, it is not far from the global best. Of course, there is also a local extreme of the basic PO algorithm. For this shortcoming, there is no more effective, provincial and municipal solution. This case realizes the use of the SO algorithm and the BP algorithm to train the neural network. First, the network is trained in the SO algorithm, and then the BP algorithm is followed by a small range of fine searches. The essence of the PO algorithm training neural network is to regard the output error function(ie, the energy function) as the objective function, and the PO seeks a global minimum value for the energy function.)

A PI controller for the single-phase grid-connected photovoltaic system has been proposed in this simulation. the proposed system consists of maximum power point tracker (MPPT) controller and PI current controller only. The proposed MPPT controller generates current reference directly the solar array power information and the current controller uses PI technique for the tight regulation of current

三目标微电网优化调度，减少成本，提升效益(Optimal Dispatching of Microgrid)