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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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Hamming1
hamming code but run correct
- 2014-10-25 00:40:24下载
- 积分：1
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LMS_RLS
自适应波速形成，RLS、LMS噪声对消器，，以及性能比较(Adaptive beamforming, RLS, LMS noise, as well as performance comparison canceller)
- 2013-12-15 12:53:04下载
- 积分：1
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Secondgenerationwavelettransform
介绍了比较新颖的二代小波变换技术，即通过分裂、预测和更新三个步骤实现小波变换
的方法，并且把这种技术成功的应用于图像融合技术中。实践表明，这是一种比较成功的图像融合解
决方案。(Introduced a relatively new technology of second generation wavelet transform, that is, through the split, predict and update the three-step realization of wavelet transform methods, and to the success of this technology applied to image fusion technology. Practice shows that this is a more successful image fusion solution.)
- 2021-05-09 01:28:35下载
- 积分：1
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Voice-traffic
stimulation of voice traffic using matlab
- 2014-10-10 01:41:31下载
- 积分：1
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Bretschneider
function [H T] = Bretschneider(F,U,D)
functie [H T] = Bretschneider(F,U,D)
F= fetchlengte (m)
U =windsnelheid (m/s)
D= depth (m)
Depth dependend Bretschneider formulag.
see
Sorensen, R.M. (1993). Basic Wave Mechanics for Coastal and Ocean Engineers. New
York: John Wiley & Sons.
- 2015-03-03 19:07:24下载
- 积分：1
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matlab.1
主要是计算LD中光场的分布，以及在稳态条件下载流子的增益，属于稳态条件下简单的情况(Mainly calculated in LD light field distribution, and the steady-state condition downloading carriers gain, belonging to steady state conditions the simplest case)
- 2013-07-02 10:49:22下载
- 积分：1
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RLSandLMSAlogrithm
一个完整的基于LMS和RLS改进算法的语音增强MATLAB程序，包括了输入输出序列和读取数据，自适应增强算法的程序(Based on a complete LMS and RLS algorithms to improve speech enhancement MATLAB procedures, including the input and output sequences and read data, adaptive enhancement algorithm procedure)
- 2007-12-04 21:14:57下载
- 积分：1
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LS_SVMlab
说明： 最小二乘支持向量机的程序包，包括了模型的训练和测试的各种函数。(Support Vector Machine package, including training and testing models of various functions.)
- 2011-03-24 20:45:05下载
- 积分：1
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mubiaofenpei
一个火力目标分配的优化问题，matlab实现(A fire target allocation optimization problem)
- 2011-07-07 10:21:26下载
- 积分：1
