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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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zlddjqd
说明： 利用MATLAB语言编写的直流电动机开环启动和闭环启动特性分析(The use of MATLAB language open-loop DC motor start-up and characteristics of the closed-loop start)
- 2009-08-22 11:56:13下载
- 积分：1
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v_limite_betaDQM
DQM法求解输液管道的流致振动问题，求解临界流速。考察颤振失稳和发散失稳的失稳方式。(DQM pipeline flow infusion method induced vibration problems, solving the critical velocity. Investigated the flutter instability and divergence instability of the instability mode.)
- 2011-06-10 11:28:25下载
- 积分：1
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BAntTsp
求解旅行商问题的蚂蚁基本算法源程序
求解Oliver30问题的(solving the traveling salesman problem Ant basic algorithm source code for the Oliver30)
- 2006-11-08 18:18:35下载
- 积分：1
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LSSVMLab-1.6
lssvm工具箱，用途广泛，可用于分类，回归，贝叶斯等(lssvm nbc)
- 2014-11-19 09:58:45下载
- 积分：1
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melbankm
这个函数也要被melcepst函数调用，用来进行计算Mel倒谱系数。这个函数的作用是构造mel滤波器组。(This function must be called melcepst function is used to calculate Mel cepstral coefficients. The role of this function is to construct mel filter bank.)
- 2013-12-12 12:30:58下载
- 积分：1
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Channel-modeling
结合理论课讲解基于Matlab建立不同信道模型：高斯信道、Rayleigh信道，Recian信道及多径衰落信道模型；
给出QAM/GMSK调制方式下在上述信道模型下的误码率性能分析，分析比较两种调制方式的优缺点；
分析信道参数、信噪比对误码率性能的影响； (Based on Matlab, we construct different channel models: Gaussian channel, Rayleigh channel, Recian channel and multipath fading channel model.
The error rate performance analysis of QAM/GMSK modulation mode under the above channel model is given, and the advantages and disadvantages of the two modulation modes are analyzed and compared.
Analysis of channel parameters, signal to noise ratio on the impact of bit error rate performance )
- 2021-03-29 20:19:10下载
- 积分：1
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branch-data
IEEE 30 BUS 數據資料 以便大家對於分析配電系統(IEEE 30 BUS data to facilitate analysis of the distribution system)
- 2013-01-22 15:39:24下载
- 积分：1
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final3
THIS CODEIS USEFUL FOR COMPRESSION OF DATA USING BITMASK AND RLE
- 2013-11-22 18:53:21下载
- 积分：1
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MATLABForSci
一套科学运算语言 MATLAB 的程序设计有关的函数代码!!!(A set of scientific computing language MATLAB programming code related to the function!!!)
- 2009-03-06 01:51:38下载
- 积分：1
