-
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
-
DTMB
DTMB，全称Digital Television Terrestrial Multimedia Broadcasting。上述资料包含了最新标准，及链路级仿真matlab代码(Digital Television Terrestrial Multimedia Broadcasting)
- 2020-11-06 11:29:50下载
- 积分：1
-
PID_CORRECTION
自动控制原理，对原系统进行PID校正，观测BODE图以及时域波形的简要程序。(Automatic control theory, PID correction of the original system, a brief observation program BODE diagram and time-domain waveform.)
- 2013-12-13 20:27:35下载
- 积分：1
-
weighted-fusion
对多传感器数据进行加权融合，该算法中提出来扩展支持度矩阵，用Matlab进行仿真。(Weighted multi-sensor data fusion, the algorithm proposed to extend the support matrix, using Matlab simulation.)
- 2012-06-13 21:33:31下载
- 积分：1
-
gm11
关于近来很火的灰色预测理论的matlab的源代码，移植性好，与诸位学友共同分享，共同进步(About the grey prediction theory recently very fire matlab source code, good portability, xueyou with share, make progress together)
- 2013-08-20 22:53:39下载
- 积分：1
-
poleplacement
线性系统中用于极点配置的标准算法，用于求解反馈增益矩阵(The standard algorithm to solve the poles placement in linear systems, which is useful in the solution of the feedback gain matrix.)
- 2010-07-17 16:01:05下载
- 积分：1
-
commande
commande vectorielle
- 2010-06-13 00:31:54下载
- 积分：1
-
INVERSE
说明： 大地电磁一维反演程序，Matlab源程序代码(One-dimensional magnetotelluric inversion program)
- 2011-02-21 13:10:14下载
- 积分：1
-
matlab
用matlab分析数值的，有拉个朗日插值、三次样条插值法、NEWTON插值、hermite插值、mewton形式的hermite插值、平方根法、gauss消去法、三角分解法、jacobi迭代法、
gauss迭代法、sor迭代法、最速下降法、共额梯度法、mewton迭代法、逆broyden迭代法。一共15段代码。
(Numerical analysis using matlab, there are a Long Day interpolation, cubic spline interpolation, NEWTON interpolation, hermite interpolation, mewton form hermite interpolation, square root method, gauss elimination, triangular decomposition, jacobi iterative method, gauss iterative method, sor iterative method, steepest descent method, a total amount of gradient method, mewton iterative method, inverse broyden iteration. A total of 15 sections of the code.)
- 2013-11-18 10:04:48下载
- 积分：1
-
svm-matlab
支持向量机(SVM)用于分类的算法实现
function [D, a_star] = SVM(train_features, train_targets, params, region)(Support Vector Machine (SVM) algorithm for classification in function [D, a_star] = SVM (train_features, train_targets, params, region))
- 2014-01-14 10:36:36下载
- 积分：1
