目录
摘要................................................................................................................................................................1
Abstract...........................................................................................................................................................2
致谢词.............................................................................................................................................................3
绪论.................................................................................................................................................................4
第一章.常用元器件基本介绍....................................................................................................................5
1.1接触器..............................................................................................................................................5
1.1.1接触器的型号说明...................................................................................................................6
1.1.2接触器的选用...........................................................................................................................6
1.2控制继电器......................................................................................................................................8
1.2.1电磁电流继电器、电压继电器及中间继电器........................................................................8
1.2.2时间继电器...............................................................................................................................9
1.2.3热继电器.................................................................................................................................11
1.2.4速度继电器.............................................................................................................................13
1.2.5信号继电器.............................................................................................................................14
1.2.6零压继电器.............................................................................................................................15
1.3刀开关与低压断路器....................................................................................................................15
1.3.1低压刀开关.............................................................................................................................15
1.3.2低压断路器.............................................................................................................................17
1.4熔断器............................................................................................................................................19
1.4.1常用的熔断器.........................................................................................................................19
1.5半导体二极管及其基本应用........................................................................................................20
1.6三极管的分类及应用....................................................................................................................21
1.7晶闸管及其应用............................................................................................................................21
第二章.电力拖动方案的确定..................................................................................................................25
2.1电动机简介....................................................................................................................................25
2.2电力系统的确定............................................................................................................................25
2.2.1电力拖动系统的选择概述.....................................................................................................25
2.2.2电动机的比较、选择.............................................................................................................26
2.2.3电动机的结构形式.................................................................................................................28
2.3电动机工作制的分类....................................................................................................................28
2.4电动机的调速、启动、制动.........................................................................................................29
第三章.电气控制电路中的保护环节......................................................................................................31
3.1主要的保护种类和原理................................................................................................................31
3.1.1过载保护...................................................................................................................................31
3.1.2短路保护...................................................................................................................................32
3.1.3限位保护...................................................................................................................................32
3.1.4电气互锁与自锁.......................................................................................................................33
3.1.5过负荷保护...............................................................................................................................33
第四章.磨床的电气控制设计..................................................................................................................34
4.1设计概述........................................................................................................................................34
4.2控制电路的特点............................................................................................................................35
4.3交流控制电路分析........................................................................................................................35
4.4电磁吸盘励磁于退磁的控制........................................................................................................37
4.4.1电磁吸盘励磁控制...................................................................................................................39
4.4.2电磁吸盘退磁控制...................................................................................................................40
参考文献.......................................................................................................................................................41
