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于 2011-06-29 发布文件大小:2KB

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计算自由空间中，loop天线的辐射方法。(for a circular loop (with constant current). The loop is radiating into free space. The directivity and radiation resistance are calculated using the trailing edge method in increments of 1 degree in theta. )

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mw
说明：可以实现一种也用m序列与walsh序列复合而成的复合序列的生成。(Can also realize an m sequence and walsh composite sequence from the generation of the composite sequence.)

2009-02-19 18:10:14下载

积分：1
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
Triangle
使用matlab编写三角形单元的有限元程序( the main code of this files is using matlab to calculate triangle element)

2009-06-30 14:49:41下载

积分：1
PeriodogramaVSWelch
Analizador de espectros mediante periodograma y metodo de welch.

2015-04-01 23:05:17下载

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MATLAB-30-case
MATLAB智能算法30个案例分析源代码(MATLAB 30 case studies of intelligent algorithm source code)

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边缘检测Canny法的源程序-cannyedge
边缘检测Canny法的源程序,网上好像有人需要，所以就放上来了(Canny edge detection method of the source, the Internet seems to be any need, therefore Fangshanglai!)

2005-04-04 19:34:41下载

积分：1
music
说明：阵列信号到达角经典算法，多重信号分类算法的源程序(the matlab program ,music )

2010-04-20 20:26:05下载

积分：1
aa
说明：使用matlab进行时域采样序列分析，得到分析图(Time domain using matlab sampling sequence analysis, analysis of Figure)

2010-05-26 14:13:49下载

积分：1
gps
gps软件接收机 matlab源码包括捕获跟踪测试多径(gps matlab tracking acqusiation)

2012-05-13 20:37:13下载

积分：1
high-gain-system
Manual MT4 trading of GPBJPY H1 or H4 very good include template and indicators...

2013-12-06 19:33:41下载

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