基于广义预测控制算法的水槽液位控制系统

作者：王晓枫，余世明，熊小华，王槊华 日期：2009-04-21/span> 浏览：3932 查看PDF文档

基于广义预测控制算法的水槽液位控制系统

王晓枫，余世明，熊小华，王槊华
(浙江工业大学 信息工程学院,浙江 杭州 310014)

摘要：为提高液位系统控制的可靠性和安全性，引入了广义预测控制算法。首先介绍了广义预测控制的基本算法,包括其基本理论、算法的优点及一些重要参数的选取标准。然后以水槽液位控制装置为控制对象建立了一个控制系统的数学模型，并对应用广义预测控制算法的该模型进行了仿真验证。仿真结果表明,所提出的算法具有良好的动态响应性能和快速跟踪设定值,并具有较好的控制效果。无论系统是否存在模型失配，只要控制系统是稳定的，就不会有静差。
关键词：预测控制；广义预测控制；液位控制系统
中图分类号：TP273文献标识码：A文章编号：1001-4551(2009)03-0035-04

Level control system based on generalized predictive control
WANG Xiao-feng, YU Shi-ming, XIONG Xiao-hua, WANG Shuo-hua
(College of Information Engineering, Zhejiang University of Technology, Hangzhou 310014, China)
Abstract: In order to improve the dependability and security of the lever control system, a generalized predictive control(GPC) algorithm was introduced. At first, generalized predictive control algorithm was briefly talked about, including its basic theory, advantages and the selection standard of some key parameters. Then a mathematical model of the control device based on actual tank lever control equipment was established. Based on the model, the generalized predictive control algorithm was put forward. The simulation results show that the presented algorithm has a good dynamic response performance, fast-track settings, and a preferable control effect. It also slows that there will be no static difference as long as the control system is stable, no matter whether there is a mismatch of the system model or not.
Key words: model predictive control; generalized predictive control(GPC); level control system