基于PLC恒压供水系统中PID控制器的实现  

The PID controller design in the constant pressure water-supplying system based on PLC

作　　者：吕惠芳[1] 

机构地区：[1]无锡工艺职业技术学院,江苏宜兴214206

出　　处：《重庆文理学院学报（自然科学版）》2009年第1期53-55,共3页Journal of Chongqing University of Arts and Sciences

摘　　要：在以PLC控制为核心,变频调速技术为基础的恒压供水系统中,PLC将压力设定值与测量值的偏差经PID运算后得到的信号控制变频器,从而通过变频器控制水泵的转速调节管网的压力,实现恒压供水的目的.介绍了基于S7-200恒压供水系统PID调节器的实现.In the constant pressure water - supplying system, a suit of PLC controlling system is based on variable frequency speed - regular technology, and in this system, by comparing the setting vale and measuring value of pressure, the deviation is obtained. Then the control volume is obtained by the PID operation to affect the transducer. Thus the pump rotational speed is controlled through transducer to adjust the pressure if the pipe network and realize the constant pressure water supply goal. The paper described the PID controller design in the constant pressure water- supplying system based on PLC S7 -200.

关 键 词：恒压供水系统 PID控制器 变频调速 闭环控制 

分 类 号：TB495[一般工业技术]