晶闸管直流电动机调速系统设计目 录1 设计概述............................................................................................11.1 设计意义与要求.........................................................................11.2 方案分析...................................................................................11.2.1 可逆调速方案....................................................................11.2.2 控制方案的选择.................................................................22 主电路的设计与分析............................................................................32.1 整流电路...................................................................................32.2 斩波调速电路............................................................................43 控制电路的设计与分析.........................................................................63.1 触发电路的设计与分析................................................................63.2 脉宽调制（PWM）控制的设计与分析............................................63.2.1 欠压锁定功能....................................................................73.2.2 系统的故障关闭功能...........................................................73.2.3 软起动功能.......................................................................73.2.4 波形的产生与控制方式分析.................................................83.3 延时、驱动电路的设计................................................................83.4 ASR 和 ACR 调节器设计.............................................................93.4.1 ASR（速度调节器）..........................................................93.4.2 ACR（电流调节器）........................................................10结束语...............................................................................................12参考文献............................................................................................13附录..........................................
