基于单片机的直流电机PWM控制系统改进  

Improvement of DC Motor PWM Control System Based on Single chip Microcomputer

作　　者：高志伟 GAO Zhiwei(College of Intelligent Manufacturing,Henan Technician College,Zhengzhou 450007,China)

机构地区：[1]河南技师学院智能制造学院,河南郑州450007

出　　处：《现代信息科技》2021年第1期48-51,共4页Modern Information Technology

摘　　要：为解决直流电机控制功率小、调速频繁等问题,对其晶体管组成的H桥驱动电路予以改进。系统基于AT89S51单片机为核心,硬件采用直流继电器结构,软件编程实现不同占空比的PWM脉冲输出。经Keil C51、Proteus仿真及虚拟仪器的数据波形监测,并通过实际调试与运行,表明可实现控制功能,并且具有功率大、成本低、工作可靠、控制电压范围广、没有发热现象等特点。In order to solve the problems of low control power and frequent speed regulation of DC motor,the H-bridge driving circuit composed of transistors is improved.The system is based on the AT89S51 single chip microcomputer as the core,the hardware adopts a DC relay structure,and the software programming realizes the PWM pulse output with different duty cycles.The data waveform monitoring of Keil C51,Proteus simulation and virtual instrument,and the actual debugging and operation show that the control function can be realized,and it has the characteristics of high power,low cost,reliable operation,wide control voltage range,and no heating phenomenon.

关 键 词：单片机 PWM H桥驱动 软件仿真 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]