目 录
第一章 概 述 .........................................................................................................................................1
1.1 课题背景.........................................................................................................................................1
1.2 单片机应用发展简介.....................................................................................................................1
1.3 主要研究工作.................................................................................................................................2
第二章 步进电机原理及驱动 .................................................................................................................4
2.1 步进电机的工作原理.....................................................................................................................4
2.2 步进电机的驱动.............................................................................................................................6
2.2.1
步进电机的驱动方式
..............................................................................................................6
2.2.2
步进电机的驱动特点
..............................................................................................................8
2.2.3
步进电机驱动器的直流供电电源的确定
............................................................................12
2.3 步进电机控制系统构成...............................................................................................................12
第三章 单片机控制步进电机的方法 ...................................................................................................14
3.1 步进电机控制方法.......................................................................................................................14
3.1.1
串行方式
.............................................................................................................................14
3.1.2
并行方式
.............................................................................................................................14
3.2 PIC 单片机介绍 ............................................................................................................................14
3.2.1 PIC
单片机介绍
..................................................................................................................14
3.2.2 PIC
系列单片机的结构
......................................................................................................15
3.3 步进电机的单片机控制 .............................................................................................................16
第四章 系统硬件设计 ...........................................................................................................................20
4.1 系统硬件结构 .............................................................................................................................20
4.2 模拟步进电机驱动电路 .............................................................................................................20
4.3 LED 显示接口电路 ....................................................................................................................21
4.4 键盘接口设计 .............................................................................................................................22
4.5 石英多谐振荡器电路设计 .........................................................................................................24
4.6 光电编码器原理及分类...............................................................................................................25
第五章系统软件设计 .............................................................................................................................28
5.1 软件结构 .....................................................................................................................................28
5.2 子程序模块 .................................................................................................................................29
5.2.1
串行静态显示模块
.............................................................................................................29
5.2.2
键盘扫描模块
.....................................................................................................................30
5.2.3
中断模块
.............................................................................................................................31
结 论 .....................................................................................................................................................36
参 考 文 献 ...........................................................................................................................................37
致 谢 .....................................................................................................................................................38
附录 1 ......................................................................................................................................................39
附录 2 ......................................................................................................................................................43
