摘要
工程实践中,控制输入约束是普遍存在的.四水箱系统是有着广泛工程应用背景的典型多流程系统,具有动态过程缓慢、强耦合、强非线性等显著特征,由于能量限制其控制输入只能在允许范围内变化.首先基于相对增益矩阵(RGA)分析确定了分布式控制结构,进而确定了预测PI控制策略,仿真结果表明,与常规PI控制方法相比,分布式预测PI控制能够更有效地克服控制输入积分饱和现象,明显提高系统动态性能,且易于工程应用.
The quadruple-tank system is a typical multi-level system with characteristics such as slow dynamics,strong coupling and nonlinear etc,and can be used to simulate the motion of minimum system or non-minimum system.This paper firstly determine the distributed control structure on the basis of relative gain array(RGA)analysis,then predictive PI control strategy is proposed.Simulation results show that distributed predictive PI control can efficiently overcome control input saturation,considerably enhance dynamic performance and easily apply to engineering,compared with traditional PI control.
作者
韩光信
付伟
刘冬
HAN Guangxin;FU Wei;LIU Dong(College of Information and Control Engineering,Jilin Institute of Chemical Technology,Jilin 132022,China;Project Group,Jilin Petrochemical Company Organic Synthesis Plant,Jilin 132022;Fertillizaefactory Jilin Petrochemical Company,Jilin 132021,China)
出处
《吉林化工学院学报》
CAS
2019年第9期51-53,共3页
Journal of Jilin Institute of Chemical Technology
基金
吉林化工学院重大科研项目(2019015)
关键词
四水箱系统
控制输入受限
分布式结构
预测PI控制
quadruple-tank system
control input constraints
decentralized control
predictive PI control
