一类网络化串级控制系统的预测控制  

Predictive control for a class of networked cascade control systems

作　　者：高鹏娥 李庆奎[1] 

机构地区：[1]山西大学数学科学学院,山西太原030006

出　　处：《陕西科技大学学报（自然科学版）》2015年第6期172-178,共7页Journal of Shaanxi University of Science & Technology

基　　金：山西省科技厅自然科学基金项目(2013011035-3);山西省留学回国人员科技活动择优资助项目(2014);教育部留学回国人员科研启动基金项目(2013-47)

摘　　要：研究了具有随机时延和数据包丢失的一类网络化串级控制系统的预测控制问题.利用网络的包传输特性和时戳技术,设计有效的预测控制机制来补偿随机时延和数据包丢失对系统的影响.通过引入误差变量,将闭环系统建模为一类离散时间切换系统.根据切换系统理论,得到具有H∞给定性能的系统渐近稳定的充分条件.最后,通过一个仿真例子说明本文所提方法的有效性.This paper is concerned with the predictive control problem of a class of networked cascade control systems （NCCSs） with random delays and packet dropouts .Using the pack‐et‐based transmission and time‐stamp technique ,the effective predictive control scheme is proposed to compensate the effect of random delays and packet dropouts in the NCCSs framework .By introducing error variables ,the resulting closed‐loop system is formulated as a discrete time switched linear system .Based on switched system theory ,a sufficient condi‐tion is obtained to ensure that the closed‐loop system is asymptotically stable with the pre‐scribed H∞ performance .Finally ,a simulation example of a NCCS for the main steam tem‐perature is given to illustrate the effectiveness of the construction approach .

关 键 词：网络化系统 串级控制 随机时延 预测机制 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]