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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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iris-location
使用中科院虹膜数据库，实现了虹膜内外边界定位(Iris database using the Chinese Academy of Sciences, to achieve both inside and outside the iris boundary localization)
- 2011-04-19 17:03:21下载
- 积分：1
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YIQun
Matlab实现蚁群寻找最短路径的TSP问题，有图像描述。(Matlab to find the shortest path to achieve ant TSP problem, there is the image description.)
- 2011-06-26 08:58:43下载
- 积分：1
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createPlane
This file is used to create planes for view factor calculation
- 2010-08-12 16:24:48下载
- 积分：1
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TNNR_DODE_LQ_SELF
截断的核范数，可用于矩阵恢复。需要知道丢失点的像素位置。该算法是 2013 PAMI上一篇文章里的算法。感兴趣的看看(Nuclear norm truncated matrix can be used for recovery. Need to know the pixel positions lost points. The algorithm is an article on the 2013 PAMI algorithms. Look interested)
- 2014-11-07 16:34:09下载
- 积分：1
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path-planning
基于matlab软件的机械臂路路径规划程序(Mechanical arm road path planning based on matlab software)
- 2020-10-20 20:37:26下载
- 积分：1
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ImageProcessing
对一幅图像加入高斯噪声和椒盐噪声后，分别进行均值滤波和中值滤波，比较两种滤波方法的优缺点(Of an image by adding Gaussian noise and salt and pepper noise, the mean filter, respectively, and median filtering, comparing the advantages and disadvantages of the two filtering methods)
- 2010-12-01 16:44:56下载
- 积分：1
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rcwa_Palik_W
说明： material property w for rcwa calculation
- 2021-03-30 21:19:09下载
- 积分：1
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CAMatlab.pdf
说明： 提供了matlab编写元胞自动机的基本思路，并提供相关的实例，为元胞自动的初学者提供了很好的资料(Provides a cellular automaton matlab write the basic ideas, and provide examples of cellular automata the beginner to provide a good information)
- 2011-03-08 10:23:15下载
- 积分：1
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gaopinfangzhen
说明： 这是一些自己几个月的劳动成果，希望与大家共享，还需要大家多多交流(This is something that a few months of hard work, hope and share, but also to interact more)
- 2006-04-18 21:17:25下载
- 积分：1
