三容水箱预测PID控制方法研究  

A Research on the Control Technique of Predicting PID by Use of Three-tank Water Tank

作　　者：陈鹏[1] 

机构地区：[1]沈阳职业技术学院,沈阳110045

出　　处：《价值工程》2015年第14期46-48,共3页Value Engineering

摘　　要：三容水箱液位控制系统,常应用于工业上。但由于非线性,大时滞,参数时变等特点,使其发展受到一定限制。本文针对其缺点,介绍基于对象特征信息的多模型建模方法,获得近似的多模型表示,并利用PID快速响应的特性,将PID算法与预测控制相结合,提出了预测PID控制方法。实验表明,预测PID控制能实现良好跟踪控制,使下水箱液位保持在目标范围之内,克服了传统控制带来的一些不足,进而满足控制的要求。The tank level control system of three-tank water tank is often used in industry.However,its development is subject to certain limits for the characteristics of nonlinearity,long time-delay and parameter time variation.For its shortcomings,this paper introduces the multi-model approach based on object feature information in order to achieve the approximate representation of multi-model.Besides,this paper also proposes the control technique of predicting PID through the combination of PID algorithm and predictive control by use of the characteristic of PID quick response.Experiments show that the control technique of predicting PID can obtain a better tracking control which can keep the low water level on target.Therefore,it can overcome some shortcomings of conventional control technique and thus meet the control requirements.

关 键 词：三容水箱 预测控制 多模型 PID 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]