PV

脉冲宽度调制（PWM）是英文“Pulse Width Modulation”的缩写，简称脉宽调制。它是利用微处理器的数字输出来对模拟电路进行控制的一种非常有效的技术，广泛应用于测量，通信，功率控制与变换等许多领域。一种模拟控制方式，根据相应载荷的变化来调制晶体管栅极或基极的偏置，来实现开关稳压电源输出晶 体管或晶体管导通时间的改变，这种方式能使电源的输出电压在工作条件变化时保持恒定。　　脉冲宽 (Pulse width modulation (PWM) is the English " Pulse Width Modulation" acronym, or pulse width modulation. It is the use of the microprocessor to the digital output of analog circuits for the control of a very effective technology, widely used in measurement, communications, power control and many other fields with the transformation. An analog control means, in accordance with the corresponding changes in load modulation transistor gate or base bias, switching power supply to achieve the output transistors or transistor on-time changes in power in this way can the output voltage in the workplace conditions of constant change. Pulse width)

Numerical Techniques in Eletromagnetics 书中的所有用matlab编写的例程(All the examples procedures written by matlab in Numerical Techniques in Eletromagnetics)

对AR（4）模型的经典功率谱估计，并与真实功率谱作比较。采用了welch方法，协方差法，burg方法(For AR (4) model of the classic power spectrum estimation, and with true power spectrum for comparison. Welch method using covariance method, burg method)

matlab三相四线制的仿真模型，通过实验据对可靠使用，很好的资料(three-phase four-wire system matlab simulation model using experimental According to a reliable, good information)

说明：  适用于初学者练习和入门，里面有几种基础算法的源码和练习版本，需要对照书去学习(Suitable for beginners and beginners, there are several basic algorithm source code and exercise version, need to learn the reference book)

support classifier vector

用于对IRIS数据进行分类的各种分类器，用于对多维采样点进行无监督分类。可根据类别数修改分类器，模式识别作业的部分代码。(IRIS data for the various classification categories, for sampling points on the multi-dimensional non-supervised classification. Can be modified in accordance with several types of classifiers, pattern recognition part of the operating code.)

此源代码,是一个非常适合研究与学习用的电力系统仿真软件源码，是一种基于mattlab的，有非常好的界面、仿真库等等，能进行PF、CPF、OPF等一些计算。 (This source code is a very suitable for research and study used in power system simulation software source code is a matlab-based, and has very nice interface, the simulation database and so on, can P )

偏微分方程数值解应用于迭代学习控制，包含几个程序(Partial differential equations numerical solution used for the iterative learning control contains several programs)

关于OFDM的调制仿真，其中使用是QPSK调制，包含FFT、循环前缀、加窗等基本过程。(OFDM modulation on the simulation, in which a QPSK modulation, contains the basic process FFT, cyclic prefix, windowing and so on.)