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高级例程-基于两个MINI板的RS485通讯
关于stm32系列所有芯片挂在总线上的多块MINI板通过CAN总线周期性向PC机发送采集信息.(The reading operation of the internal IC of all the chips in the STM32 series belongs to the advanced process.)
- 2020-06-18 06:20:01下载
- 积分：1
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4线步进电机控制
说明： 步进电机控制，采用4线程得方式，C语言编写，亲测可用(Stepper motor control, using 4 threads, C language, pro-test available)
- 2019-04-19 17:00:20下载
- 积分：1
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Stepper-motor-acceleration
基于单片机和C语言的，步进电机加速减速匀速演示，希望方便大家(Based on SCM and C language, stepper motor acceleration and deceleration uniform presentation, I hope to facilitate)
- 2013-10-09 10:58:38下载
- 积分：1
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51stepmotor-driver
简单的51单片机控制驱动,功能简单,可以调节转速,适合新手学习.(Simple 51 SCM control drive, a simple function, you can adjust the speed, suitable for beginners to learn.)
- 2013-08-02 15:22:06下载
- 积分：1
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time.DS18B20.TLC549
MSP430F149万年历，温度传感器，电压测量(MSP430F149 calendar, temperature sensor, voltage measurement)
- 2010-08-14 12:13:35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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rilishizhong
说明： MCU 52 单片机控制程序，主要功能是日历时钟显示函数控制函数的算法。(MCU 52 microcontroller control program, the main function is to control the function of the calendar clock display function, the algorithm.)
- 2011-04-07 11:06:50下载
- 积分：1
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PWM
pwm控制器，包括整流个逆变，基于pscad仿真软件(pwm controller, including the rectification of the inverter, based on the simulation software pscad)
- 2021-04-27 22:08:44下载
- 积分：1
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51黑论坛_光立方（595 2803）
基于595的光立方程序及原理图Pcb图，自己动手的指南(A 595 - based light cube program and schematic diagram Pcb, a hands-on guide)
- 2017-11-27 23:45:33下载
- 积分：1
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MSP430AFE253
这是用MSP430AFE253单片机开发的，用于测量电流，电压，功率，功率因素等的程序。精度高。开发工具是IAR_EW_MSP430_5502，全部是C语言开发。(This is MSP430AFE253 microcontroller development, the program used to measure current, voltage, power, power factor and the like. High accuracy. Development tools are IAR_EW_MSP430_5502, all C-language development.)
- 2020-11-13 17:39:42下载
- 积分：1
