摘要
双容水槽是工业生产过程的常见被控对象,对其液位的控制通常采用模拟仪表、计算机、PLC等单回路控制,本文应用西门子S7-200系列PLC结合液位传感器构成串级控制系统,该系统能有效克服对象的容量滞后,提高控制精度,减小系统超调。同时应用组态王软件完成对该系统的上位机监控,具有较强的实用性。
Double water-tanks Level is a familiar controlled object, and it is often controlled by a single-loop system with analog instrument, computer and PLC. In this paper, S7-200 PLC,level transmitter and electronic valve are used to make up the cascade control system, and the system can overcome the capability lag of the object availably to improve control precision and reduce the overshoot of the system. Furthermore, Kingview6.5 software is used to compose the monitoring system which monitored the running conditions of the liquid level control system.
出处
《微计算机信息》
2009年第16期60-61,共2页
Control & Automation
关键词
双容水槽
串级
液位
PLC
监控
double water tanks
cascade control
level
PLC
monitoring system
