首次延迟与纯延迟系统  

First Delay and Pure Delay Systems

作　　者：侯明[1] 徐文龙 李擎[1] 王巧玲[1] 管萍[1] HOU Ming;XU Wenlong;LI Qing;WANG Qiaoling;GUAN Ping(School of Automation,Beijing Information Science and Technology University,Beijing 100192,China)

机构地区：[1]北京信息科技大学自动化学院,北京100192

出　　处：《实验室研究与探索》2021年第8期92-95,113,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(61971048);北京信息科技大学教改项目(2021JGYB13)。

摘　　要：研究过程控制系统中常见的3种典型对象,发现实验数据与理论不一致,分析认为当前教科书对管道水箱对象的建模可能存在一个谬识,导致所设计的控制方法,适用性较差。通过对其机理分析,发现管道水箱与其他对象工作机理差异,并进行了简单的实验验证。结果表明,管道延迟并非普遍认为的纯延迟环节。建立修正的数学模型,仿真典型响应,根据模型设计了控制器,使得控制效果得到大幅度的提高。This paper studied three typical objects in process control system,and found some experimental data areinconsistent with the theory,and then suspected that there may be a widespread fallacy in the modeling of pipeline water tank object in current Chinese and foreign textbooks,which leads to the poor performance of the control method designed based on the fallacy.Through the analysis of the mechanism,we pointed out the differences between the pipeline water tank and other objects,and the simple experimental verification was carried out.The experimental results show that the doubts in this paper are correct.A correct mathematical model is established,and the controller is designed according to the correct model,which greatly improves the control effect.

关 键 词：纯延迟 首次延迟 管道水箱 斯密斯预估器 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]