微机原理课程设计 步进电机的正反转及调速控制

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1、成绩课程设计报告题目步进电机正反转及调速控制系统的设计课程名称微机原理及应用院部名称机电工程学院专业电气工程及其自动化班级10电气1班学生姓名管志成学号1004103027课程设计地点C304课程设计学时20指导教师李国利金陵科技学院教务处制27摘要步进电机是将电脉冲信号转变为角位移或线位移的开环控制元件，具有快速启动能力,定位精度高，能够直接接受数字量，因此被广泛地应用于数字控制系统中，如数模转换装置、精确定位、计算机外围设备等，在现代控制领域起着非常重要的作用。本设计基于Proteus7.8设计环境，运用了8086CPU芯片以及7427

2、3芯片、74244芯片和步进电机以及7位小功率驱动芯片ULN2003A、按钮、指示灯等辅助硬件电路，设计了步进电机正反转及调速系统。绘制软件流程图，进行了软件设计并编写了源程序，最后对软硬件系统进行联合调试。该步进电机的正反转及调速系统具有控制步进电机正反转的功能，还可以对步进电机进行调速，不同的按钮对应不同的速度，并且在没有速度按钮按下的时候，步进电机自动切换到停止状态。关键词：步进电机；正反转；调速控制；ULN2003A芯片；8086微机系统27目录一、概述1.1课程设计的目的······························

3、················41.2课程设计的要求············································4二、总体设计方案及说明2.1系统总体设计方案··········································52.2系统工作框图··············································5三、系统硬件电路设计3.1Intel8086微处理器的简介···································63.2步进电机的原理·····

4、·······································73.3ULN2003A的简介··········································83.474154芯片简介·············································93.574LS273芯片简介··········································103.68086最小系统的设计········································11273.

5、7步进电机及其驱动电路的设计································123.8电机状态显示电路的设计····································123.9输入采样电路的设计········································133.10系统总电路图··············································14四、系统软件部分设计4.1系统流程图···········································

6、·····154.2系统软件源程序············································164.2.1电机绕组通电顺序设定····································164.2.2延时子程序设计·········································164.2.3汇编源程序及说明········································16五、总结5.1系统软硬件的联合调试······························

7、·········215.2问题分析和解决方案·········································23275.3心得与体会·················································23六、参考文献······················································23附录：总电路图····················································25一、概述1.1课程设计的目的通过本课程设计，使

8、学生掌握控制系统设计的一般步骤，掌握系统总体控制方案的设计方法。使学生进一步掌握微型计算机应用系统的硬、软件开发方法，输入/输出(I/O)接口技术，应用程序设计技术，并能结合专业