PLC在双闭环DDC直流调速系统中应用

Application of PLC in double-closed loop DDC speed adjustment system

介绍了PLC构成的双闭环DDC直流调速系统,重点讨论了在调速系统中用PLC实现转速给定、转速检测及电流检测的方法,同时给出了用PLC实现DDC控制的软件框图。

The system of double—closed loop DDC speed Adjustment by using DC is introduced with the focus on the method of how to set and test rotate speed,and how to test currency.Meanwhile,the framework is given of DDC by PLC.