1、 毕业设计 (论文 ) 摘要 本文主要介绍了基于 AT89C51 单片机的直流电机控制系统的设计。包括介绍直流电机调速的相关知识以及 PWM 调速的基本原理和实现方法，这对于直流电机速度控制系统的实现提供了一个有效的途径。本次毕业设计主要任务是完成单片机的直流电机控制系统总体设计，包括直流电机的驱动方式，直流电机的控制方式，单片机外围电路、键盘电路、驱动电路、显示电路等硬件设计及相应的驱动程序设计，设计出的控制系统应能够使直流电机实现正反转、加减速调节，并可从键盘输入进行相应工作模式的切换，用显示屏显示当前的状态，如速度、正反转等信息。 关键词 ： 直流电机调速； 单片机； PWM； LCD显
2、示； 毕业设计 (论文 ) Abstract This article introduces the AT89C51 microcontroller based DC motor control system design. Including introduction of DC motor speed-related knowledge, as well as basic principle and implementing method of PWM speed control, For realization of DC motor speed control system provi
3、des an effective way. The graduation major task is to complete overall design of single-chip computer control system of DC motor, Including the dc motor drive mode, the control of dc motor, Microcontroller peripheral circuits, circuit, driving circuit of the keyboard, display, design of hardware suc
4、h as circuit design and the corresponding driver, Design the control system should be able to achieve the reverse, speed regulation of DC motor and can be entered from the keyboard to the corresponding operating mode switch, the display shows the current status, such as speed, reverse and more. Keywords: single chip； PWM； DC motor speed； LCD display；
