目 录
Abstract.....................................................................................................................................III
引 言...........................................................................................................................................1
1 总体方案设计..........................................................................................................................2
1.1 总体分析........................................................................................................................2
1.2 方案框图........................................................................................................................2
2 单元模块设计..........................................................................................................................3
2.1 键盘与显示模块............................................................................................................3
2.1.1 模块工作原理......................................................................................................3
2.1.2 芯片 CH452 介绍.................................................................................................4
2.1.2.1 特点...................................................................................................................4
2.1.2.2 显示驱动原理...................................................................................................5
2.1.2.2 键盘扫描原理...................................................................................................6
2.2 单片机控制单元模块电路............................................................................................8
2.2.1 控制原理..............................................................................................................8
2.2.2 光电耦合电路......................................................................................................9
2.2.3 芯片介绍............................................................................................................10
2.3 串行通信模块..............................................................................................................13
2.3.1 RS232 通信协议................................................................................................13
2.3.2 串行通信电路....................................................................................................14
3 电机与电气控制电路设计....................................................................................................16
3.1 步进电机模块..............................................................................................................16
3.1.1 步进电机的工作原理........................................................................................16
3.1.2 步进电机的步距角与工作拍数........................................................................18
3.1.3 步进电机的频率特性........................................................................................19
3.2 交流电机正反转控制原理..........................................................................................21
3.3 交流电机的星—三角形启动......................................................................................22
3.4 电气元件介绍..............................................................................................................22
结 论.........................................................................................................................................24
参 考 文 献...............................................................................................................................25
附录 A 单片机控制系统电路原理图设计..............................................................................26
附录 By:电气控制原理图 1.....................................................................................................27
致 谢.........................................................................................................................................28
VIP享7折，此内容立减5.97元 
