目录
1.1 步进电机的应用及发展前景 .....................................................................................................4
1.2 国内步进电机发展现状.............................................................................................................5
1.3 课题背景及意义.........................................................................................................................7
1.4 主要技术指标.............................................................................................................................7
第二章 总体方案设计 .....................................................................................................................7
2.1 系统工作原理 ...............................................................................................................................8
2.1.1
步进电机工作原理
................................................................................................................8
2.1.2
步进电机控制方式
................................................................................................................8
2.2 系统控制方案论证 ........................................................................................................................9
2.2.1
控制系统选择
......................................................................................................................9
2.2.2
控制电路选择
........................................................................................................................9
2.2.3
单片机控制信号方式选择
..................................................................................................10
2.2.4
外围设备方案选择
..............................................................................................................11
2.2.5
键盘的选择
..........................................................................................................................11
第三章 系统硬件设计 ...................................................................................................................12
3.1 系统框图 .....................................................................................................................................12
3.2 硬件选择与设计 .........................................................................................................................12
3.2.1
控制器选择
........................................................................................................................12
3.2.2 AT89S51
外部电路
................................................................................................................15
3.2.3
步进电机驱动芯片
..............................................................................................................18
3.2.4
光电编码器
..........................................................................................................................20
3.2.5
光电编码器与单片机间数据传输单元
..............................................................................22
3.2.6
电源设计
..............................................................................................................................22
第四章 系统的软件设计................................................................................................................23
4.1 总体设计思想 ..............................................................................................................................23
4.1.1
系统的工作过程
...................................................................................................................23
4.1.2
程序设计方法选择
...............................................................................................................23
4.1.3
编程语言的选择
...................................................................................................................24
4.2 程序的设计.................................................................................................................................26
4.2.1
各功能程序设计方案
..........................................................................................................26
4.2.2
主程序
..................................................................................................................................37
总 结..............................................................................................................................................38
致 谢..............................................................................................................................................39
参考文献 ........................................................................................................................................40
附录 1：部分程序清单 ..................................................................................................................41
附录 2：硬件电路原理图...............................................................................................................47
第一章 绪论
