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Ex_Ctrl6SDI-0401
简单的学生信息管理系统,基于c++6.0 mfc 对话框(Simple student information management system)
- 2017-07-07 15:07:29下载
- 积分:1
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FFT2
进行快速傅里叶变换的程序,可以利用C++或者MATLAB直接完成快速傅里叶变换(Fast Fourier transform for the program can be utilized C++ or MATLAB directly to complete the fast Fourier transform)
- 2013-01-24 15:51:43下载
- 积分:1
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GPIB
包含对gpib通讯的一些操作,类中包括对安捷伦数字万用表的基本操作,对固纬程控电源的基本操作和程控变阻箱的基本操作(Contains some operations for GPIB Communications,Class includes the basic operation of Agilent digital multimeter, weft fixing programmable power supply and programmable resistance box.)
- 2019-02-19 09:41:33下载
- 积分:1
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shuanglushuzihecheng
摘要
电能表作为用电量的测量工具广泛的应用于各种场合。在电能表校表系统中,需要的最基本的输入信号源是高精度双路正弦信号源,并要求可对其频率、相位、幅值进行调节,来对电能表进行校准。
基于单片机的程控信号源设计,运用数字调相、数字调幅和数字调频等技术,要求实现相位、幅度、频率的高精度程控调节。本文设计了一种利用锁相环频率合成技术和数字波形合成技术组成的程控低频正弦波信号发生器,并给出了调幅、调频、调相的实用电路,频率调节通过改变8253计数器的分频系数来实现;相位调节由51单片机预置计数器的计数初值来完成,幅度的调整通过改变DAC1210II的参考电压来实现,使频率分辨率达0.01Hz,相位调节精度达0.1°,并介绍电路中的主要芯的功能及使用。输出正弦波频率和幅值的精度高,稳定性好,失真度低,电路简单、可靠、便于程控。
关键词:数字合成信号源;程控;调幅;调频;移相;
(Abstract
Meter consumption as the size of the measurement tool is widely used in various occasions. In single-phase power meter verify system, the most basic needs of the input signal is the source of two-way high-precision sine signal source, and may request its frequency, phase, amplitude in a certain step to adjust to the imitate of the actual electricity load with a right meter calibration.
Design of the programmable signal supply controlled source,which based on the MCU,including digital phase adjustment,distal amplitude adjustment,digital frequency adjustment etc.The system should achieve high quality digital adjustment of phase, amplitude and frequency. This paper describes the use of a PLL frequency synthesizer technology, and digital wave form synthesis technology consisting of program-controlled low-frequency sine wave signal issued devices, and applies the amplitude, frequency, phase of practical circuit. Frequency can be adjusted through a change in the 8253 counter-frequ)
- 2021-04-08 20:19:00下载
- 积分:1
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_halcon视觉例子程序
说明: C#联合Halcon例子程序,通用模板可以下下来看哦(C # union Halcon routine)
- 2020-09-07 14:00:48下载
- 积分:1
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123
步进电机控制,LCD显示Stepper motor control, LCD display(Stepper motor control, LCD display)
- 2018-11-09 13:23:44下载
- 积分:1
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使用开源的libqrencode,编译成lib库,很好的兼容中文,并且还包括了一个日本人的二维码生成工具
使用开源的libqrencode,编译成lib库,很好的兼容中文,并且还包括了一个日本人的二维码生成工具
- 2023-01-16 19:30:11下载
- 积分:1
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匿名开拓者Pro飞控源码、原理图
飞行器开源及其示范典例,轻轻松松,从入门到精通,不再为开源而烦恼(Open source vehicle)
- 2020-09-15 17:37:56下载
- 积分:1
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LD3320_探索者
使用STM32F407实现LD3320的语音识别(Using STM32F07 to run LD3320 of ASR)
- 2021-02-03 20:19:58下载
- 积分:1
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0
说明: 1. 阅读C#编程方面的书籍与资料。
2. 使用窗体界面、控件编程。
3. 把图像数据读取到变量或数组中。(1. read C# programming books and materials.
2. use form interface and control programming.
3. read image data into variables or arrays.)
- 2018-10-08 20:55:05下载
- 积分:1