基于PLC的液位控制系统研究与设计  

Research and Design of the Control System of Liquid Level based on PLC

作　　者：杨达飞[1] 欧艳华[1] 

机构地区：[1]柳州职业技术学院,广西柳州545006

出　　处：《柳州职业技术学院学报》2015年第2期67-71,共5页Journal of Liuzhou Vocational & Technical College

基　　金：2014年广西教育厅科研项目(LX2014531);2013年广西教育厅科研项目(2013YB353)

摘　　要：针对工业控制领域中的液位自动高精度的控制问题,重点研究基于PLC的液位控制技术。分析PLC控制原理和PLC控制系统的组成结构,构建了基于PLC的液位自动控制系统组成结构。针对液位控制系统中各实现模块进行分析,主要对液位控制系统中的控制模型和控制方法进行了重点研究。集中基于PID智能控制模型,分析PID控制模型的实现原理和控制机构,利用围绕如何提高控制系统的控制精度和响应速度,设计基于模糊PID的控制模型,提高了液位控制系统的控制精度及响应速度。In order to control the liquid level in the field of industrial control of the automatic high precision, focuses on the research of level control technology based on PLC. Analysis of the structure of PLC control theory and PLC control system, we constructed the PLC liquid level automatic control system composition structure based on. Analyze each module implementation in liquid level control system, mainly on the control model and control method in liquid level control system is the key of the research. Centralized control model based on Intelligent PID, analyzes the principle and control mechanism to realize the PID control model, by focusing on how to improve control accuracy and response speed of the system, designed the model of fuzzy control based on PID, and improve the control accuracy of liquid level control system and the response speed.

关 键 词：液位控制 PID 模糊控制 工业控制 模型 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]