比例阀控液压缸位置PID闭环控制的PLC软件实现

摘要

A software implementation method of hydraulic cylinder position PID closed loop control in proportional valve control system using Siemens S7-200 was proposed.The block diagram and ladder program was given,and experimental studies in Festo TP701 proportional hydraulic test bed was done.Experimental studies have shown that the proportion of open-loop control system,using software methods can achieve the closed-loop control of position and other physical quantities,to control the performance of precision and anti-jamming capability to meet the demand of general industrial applications.%提出一种利用西门子S7-200实现比例阀控制系统中液压缸位置PID闭环控制的软件实现方法,给出了程序框图及梯形图程序,并在Festo TP701比例液压试验台上进行实验研究.实验研究表明,开环比例控制系统中,利用软件的方法可实现位置等物理量的闭环控制,控制精度和抗干扰能力等性能可满足一般工业应用的需求.