basic-pso

矿用电机车电控系统有两种,一种是有触点的电控系统,另一种是脉冲调速系统。以晶闸管为主要元件的脉冲调速系统在矿用电机车中仍大量使用。晶闸管属于半控型器件,其控制极只能控制开通而不能控制其关断,在低速运行时,晶闸管一经导通后,如果不能根据需要关断,则电动机承受全部电压而失去控制,电机车全速运行。本文利用MATLAB软件对矿用电机车晶闸管脉冲调速系统的主电路进行建模并仿真,对影响安全运行的关键元器件进行了详细的分析。仿真结果表明晶闸管脉冲调速系统存在安全隐患。随着电子工业的飞速发展,一种新型的全控型电力器件(绝缘门极晶体管IGBT)开始在工业中得到广泛的应用,脉冲调速电控系统如采用全控型电力器件代替半控型元器件(晶闸管),将会大大简化控制电路。由于控制电路简单,便于实现数字化控制。本文对IGBT的调速原理进行分析,采用IGBT和集成PWM脉宽调制器SG3525为主要元件,设计出了双闭环可逆自动调速系统,并对该系统进行实验验证,实验结果表明该系统优于晶闸管直流调速系统,而且运行稳定,可以很方便实现可逆运行。(Mine electric locomotive electronic control system has two types of electronic control system with contacts, and the other is the pulse speed control system. The pulse thyristor as the main component in the mining electric locomotive speed control system is still widely used. A semi-controlled thyristor type devices, the control can only control a very open and can not control the turn-off, in the low speed, the thyristor turn-on once, if not turned off as needed, then the loss of the motor under full voltage control, motor vehicle running at full speed. In this paper, MATLAB software mining electric locomotive speed control system pulse thyristor main circuit modeling and simulation, the key components of the safe operation of a detailed analysis. Simulation results show that the thyristor pulse control system security weaknesses. With the rapid development of the electronics industry, a new full-controlled power devices (Insulated Gate Transistor IGBT) began to be widely used in indu)

different classifier for matlab

该代码仅计算了一个101×101尺寸的Gabor函数变换，得到均值和方差。代码采用两种卷积计算方式，从结果中可以看出，快速傅立叶变换卷积的效率是离散二维叠加和卷积的近50倍。 (The code is only the calculation of a 101 × 101 size Gabor function transformation, the mean and variance. Convolutional code using two methods of calculation can be seen from the results, fast Fourier transform convolution efficiency are two-dimensional discrete convolution superposition and nearly 50 times.)

利用Matlab对通信系统仿真的基本思想和方法； 利用MATLAB的集成仿真环境Simulink对双边带幅度调制系统进行仿真 (Matlab simulation of communication systems using the basic ideas and methods integrated simulation environment using MATLAB Simulink bilateral system is simulated with amplitude modulation )

说明：  首先将YUV格式的视频转换为MAtlab适用的格式，通过主要采用DCT变换的方式，实现视频水印的嵌入。(First, the YUV format video conversion MAtlab for the format, mainly DCT transform by way of video watermark embedding.)

Matlab与数值分析简明教程,一共十章，针对不同类型的数值分析，每章一个数值分析实验，有详细的代码，以及练习(Matlab and numerical analysis of a simple tutorial, a total of ten chapters for different types of numerical analysis, each chapter a numerical analysis of experiments, the code in detail, as well as practice)

matlab 插值与拟合的几个程序 牛顿迭代法 数值分析与mtlab源码 还有其他的一些例子(Matlab interpolation and fitting of several procedures Newton iterative numerical analysis and also its source mtlab Some of his examples)

GPRMAX2.0中读取geo、out文件的命令。(file command to GPRMAX2.0 in using to read geo&out file.)

matlab 建模 是例子大全 2014数学建模使用(Modeling is examples of matlab)

海杂波K-分布模型模拟仿真程序 海杂波K-分布模型模拟仿真程序(K distribution in matlab )