PLC控制的双闭环串级调速系统

PLC Control Double Loop Series Adjustable Speed System

为了改善串级润达系统的性能指标，根据交流调速理论及自动控制的系统的原理，介绍了Pn控制的双闭环串级调速系统的组成、工作原理和操作步骤，简要分析了调速系统的动态性能。并利用实验设备，测量了系统的静态与动态指标，记得在实践中推广应用．

In order to improve the property target of series adjustable speed system,according to the theory of AC adjustable speed and the principle of automatic control system,this paper introduces the composition, working principle and operating step of PLC control double looP series adjustable speed system,and brief analyses the dynamic state property of system. The static and dynamic parameter is measured by the equipment of experiment. The double loop series adjustable speed system is worth to use in pratice because it possesses good property target