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SpeedRegulationSystemResearchofMiningElectricLocom
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)
- 2010-12-24 13:40:45下载
- 积分：1
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Moorer2
Moorer混响模型的matlab程序(Moorer reverb model matlab procedures)
- 2021-03-21 20:49:17下载
- 积分：1
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Hilbert-Huang Transform
EMD 分解程序，官网HHT文件官网HHT文件(EMD decomposing program, official website HHT file official website HHT file)
- 2018-09-03 13:03:00下载
- 积分：1
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fem_example
极好的有限元结构动力学分析算例，为初学者带来福音(good example for dynamic analysis)
- 2009-11-18 17:05:59下载
- 积分：1
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ofdm918
文件夹“AWGN”说明了系统误码率在均衡前后随SNR增加的变化。
（1）绘制误码率曲线。运行m文件：main_picture,调用主函数：ofdm_AWGN。
（2）绘制星座点图。运行m文件：snr_xinzuotu(Folder )
- 2007-09-19 16:33:21下载
- 积分：1
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niudunfa
本程序的功能是用牛顿——拉夫逊法进行潮流计算。程序为10节点，10支路。供研究电力系统潮流的人员参考。(This procedure is the function of the Newton- Raphson method flow calculation. Procedures for the 10-node, 10 branches. Power Flow for research officers.)
- 2013-08-08 20:37:12下载
- 积分：1
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matlab_GUI_2
matlab GUI交互界面制作的视频教程，可以用来学习，值得一看(matlab gui)
- 2011-07-11 11:42:09下载
- 积分：1
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HSJZ
function [ H ,S ] = HS( f )
UNTITLED2 Summary of this function goes here
Detailed explanation goes here
syms x1 x2
f1=diff(f,x1)
f2=diff(f,x2)
S= [f1 f2]
H = [diff(f1,x1) diff(f1,x2) diff(f2,x1) diff(f2,x2)]
end
s0=subs(S,findsym(S),[0 0])(function [H, S] = HS (f) UNTITLED2 Summary of this function goes here Detailed explanation goes here syms x1 x2 f1 = diff (f, x1) f2 = diff (f, x2) S = [f1 f2] H = [diff (f1, x1) diff (f1, x2) diff (f2, x1) diff (f2, x2)] end s0 = subs (S, findsym (S), [0 0 ]))
- 2013-04-11 23:40:13下载
- 积分：1
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GA_F6
运用遗传算法（GA）实现Schaffer s F6 函数的优化(The use of genetic algorithms (GA) to optimize Schaffer s F6 function)
- 2013-11-29 10:56:19下载
- 积分：1
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miufeng_v46
迭代自组织数据分析，有较好的参考价值，采用了小波去噪的思想。( Iterative self-organizing data analysis, There are good reference value, Using wavelet denoising thought.)
- 2016-06-18 20:36:51下载
- 积分：1
