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phase
设计了一基于现场可编程门阵列(FPGA)的低频数字式相位测量仪。该测量仪包括数字式移相信号发生器和相位测量仪两部分,分别完成移相信号的发生及其频率、相位差的预置及数字显示、发生信号的移相以及移相后信号相位差和频率的测量与显示几个功能。其中数字式移相信号发生器可以产生预置频率的正弦信号,也可产生预置相位差的两路同频正弦信号,并能显示预置频率或相位差值;相位测量仪能测量移相信号的频率、相位差的测量和显示。两个部分均采用基于FPGA的数字技术实现,使得该系统具有抗干扰能力强,
可靠性好等优点。()
- 2008-05-10 14:51:06下载
- 积分:1
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Core8051_IS_UG
说明: 8051指令集,指令說明
ADD, CLR, MOV, MOVX,..等(Core 8051 Instruction Set Details
ADD, CLR, MOV, MOVX,..)
- 2020-06-17 02:00:01下载
- 积分:1
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distributionnetworkconfiguration
说明: 电力方面配电网重构方面的资料,详细介绍了配电网重构的存在的问题,应用的方法,文章大多为硕博论文,比较详尽,是这方面学习的好资料(Electricity distribution network reconfiguration information, details of the distribution network reconfiguration problem, the application of the method, the article mostly papers, more detailed study in this regard the good information)
- 2010-03-30 09:55:06下载
- 积分:1
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CT107D
ct107d的一个简单实用原理图,实际实用,感觉效果不错(ct107d schematic diagram of a simple and practical, the actual practical effect of feeling good)
- 2011-07-27 17:06:05下载
- 积分:1
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buck
说明: Buck converter design in multisim software
- 2020-07-05 21:55:51下载
- 积分:1
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commonerforscpi
常见的SCPI错误, 在使用支持SCPI指令集的可编程仪器时特别有用(COMMON ERROR OF SCPI,It s useful for program instrument which support scpi)
- 2009-04-12 10:19:18下载
- 积分:1
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based-on-SVPWMvectorcontrol
为了给变频调速系统提供必要的设计参数,依据空间电压矢量脉宽调制(SVPWM)基本原理,介绍了
异步电动机及 SVPWM 算法在 Matlab/Simulink 环境下的建模过程及基于矢量控制理论的变频调速系统动态
模型建立。详细地阐述了实现仿真的方法,并针对仿真中的关键问题及系统的仿真结果进行了分析。仿真结
果表明,采用该控制系统,电压及转矩波动小,转速响应迅速,系统的各项指标都满足电机实际运行特性要
求。其仿真算法对于实现数字化控制变频调速系统具有一定的价值。
(To provide the necessary design parameters for the actual motor control system, the modeling course of
voltage space vector pulse wide modulation(SVPWM)agrithmetic and AC motor under Matlab/Simulink environment
are introduced. The dynamic model of variable frequency speed regulating system based on vector control is
discussed according to the principle of SVPWM. The new method of realizing simulation, key problems and
results of the simulation are analyzed in detail. The experimental simulation results show that this system has
smaller fluctuations of voltage and torque, quicker response speed, and all of the indicators accord with the
performance of the actual motor. The simulation agrithmetic have value to realize controlling motor with digital
signal processing.
)
- 2021-04-21 10:48:49下载
- 积分:1
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无人机在农业方面的三位场景构建研究
说明: 无人机在农业中建立三位场景,用于研究相关农业大棚方位坐落的问题(Construction and application of parametric agriculture 3D scene based on UAV)
- 2021-04-07 20:52:50下载
- 积分:1
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105151540090
这是一个简单的关于用Vc写的学习成绩管理的小程序的一个程序测试可以方便一些测试文档的编写(This is a simple Vc wrote about the academic management of a program to test a small program you can easily write some test documents)
- 2013-06-19 17:51:12下载
- 积分:1
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AStudyOfIntelligentPreviewControlMethod
说明: 介绍了一种路径跟踪的智能预瞄控制方法,并介绍了智能预瞄控制器的原理、结构及其设计过程。
(This paper presents a path tracking control method for intelligent preview, and introduced the intelligent preview controller principles, structure and design process.)
- 2020-12-28 01:49:03下载
- 积分:1