摘要
双容水箱的液位是典型的MIMO非线性耦合系统,针对液位控制,构建了基于ControlLogix的控制系统,解决液位控制问题;根据物料平衡原理建立了双容水箱的数学模型,并且在稳态工作点附近进行线性化,进一步依据解耦算法的原理,给出了双容水箱液位控制的解耦模型,在此基础上采用PID控制器进行控制。实验结果表明,基于解耦算法的液位PID控制效果要好于单纯的PID控制。
The double-tank liquid level control is a non-line,coupling system.This paper presented the control system based on ControlLogix.According to the principle of materiel balance,the model of double-tank was described.In stable state neighbor-hood,the linearization of double-tank system model was presented.In term of the decoupling principle,the decoupling model of double-tank was given,then the PID controller was applied to the systerm.The experiment results demonstrate that the performance based on decoupling control is effective.
作者
李宗帅
乔辉
王修岩
LI Zong-shuai;QIAO Hui;WANG Xiu-yan(Aerontatical Automation College,Civil Aviation University of China,Tianjin 300300,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2012年第1期94-96,共3页
Instrument Technique and Sensor
基金
中国民航大学校级科技项目(09CAUC_E09)
关键词
解耦控制
双容水箱
液位
decoupling control
double-tank
liquid level
