少保守性网络化控制系统鲁棒保性能容错控制

doi:10.3969/j.issn.1000-1093.2012.02.007

兵工学报 ›› 2012, Vol. 33 ›› Issue (2): 170-178.doi: 10.3969/j.issn.1000-1093.2012.02.007

少保守性网络化控制系统鲁棒保性能容错控制

李炜^1,2，王艳飞¹

(1.兰州理工大学电信工程与信息工程学院, 甘肃兰州 730050；2.甘肃省工业过程先进控制重点实验室，甘肃兰州 730050)

收稿日期:2010-07-27 修回日期:2010-07-27 上线日期:2014-03-04
作者简介:李炜(1963—)女，教授，博士生导师
基金资助:
国家自然科学基金资助项目(60964003)；甘肃省自然科学基金资助项目(096RJZA101)

The Less-conservative Robust Guaranteed Cost Fault-Tolerant Control of Networked Control Systems

LI Wei^1,2, WANG Yan-fei¹

(1.College of Electrical and Information Engineering,Lanzhou University of Technology, Lanzhou 730050, Gansu China;2.Gansu Province Key Lab of Industrial Advanced Process Control, Lanzhou 730050, Gansu China)

Received:2010-07-27 Revised:2010-07-27 Online:2014-03-04

摘要/Abstract

摘要： 研究了一类具有参数不确定性网络化控制系统的鲁棒保性能容错控制问题。同时考虑时变时延和丢包的影响，基于状态多时延模型，推证出了确保闭环系统在执行器或传感器发生失效故障时具有鲁棒保性能容错的时滞依赖充分条件，并以求解线性矩阵不等式(LMIs)的方式给出了最优控制器的设计方法。由于新模型中引入了时延下界，且在证明过程中未进行模型转换和交叉项放大处理，加上适当自由权矩阵的引入，都减少了结果的保守性，提升了容错满意度。最后以一仿真示例验证了文中所述方法的有效性。研究了一类具有参数不确定性网络化控制系统的鲁棒保性能容错控制问题。同时考虑时变时延和丢包的影响，基于状态多时延模型，推证出了确保闭环系统在执行器或传感器发生失效故障时具有鲁棒保性能容错的时滞依赖充分条件，并以求解线性矩阵不等式(LMIs)的方式给出了最优控制器的设计方法。由于新模型中引入了时延下界，且在证明过程中未进行模型转换和交叉项放大处理，加上适当自由权矩阵的引入，都减少了结果的保守性，提升了容错满意度。最后以一仿真示例验证了文中所述方法的有效性。

关键词: 控制理论, 网络化控制系统, 时变时延, 丢包, 保性能控制, 鲁棒容错控制

Abstract: The robust guaranteed cost fault-tolerant control for a networked control system (NCS) with parameter uncertainty was studied. Under the consideration of time-varying delay and packet dropout, the sufficient condition of robust guaranteed cost fault-tolerant control for NCSs against the failure of actuator or sensor was given based on the model with multiple successive delays of state in terms of a delay-dependent approach. The design techniques of optimal guaranteed cost fault-tolerant controller were given by solving the linear matrix inequalities(LMI). Since a lower bound of the time-delay was introduced in the model , the model transformation and the scaling-up of cross terms were not preformed during the proof, and the appropriate free-weighting matrices were introduced, the conservativeness was reduced, and the degree of fault-tolerant satisfaction was improved .Finally, a numerical example was used to illustrate the effectiveness of the proposed method.

Key words: control theory, networked control system, time-varying delay, packet dropout, guaranteed cost control, robust fault-tolerant control

中图分类号:

TP273

李炜，王艳飞. 少保守性网络化控制系统鲁棒保性能容错控制[J]. 兵工学报, 2012, 33(2): 170-178.

LI Wei, WANG Yan-fei. The Less-conservative Robust Guaranteed Cost Fault-Tolerant Control of Networked Control Systems[J]. Acta Armamentarii, 2012, 33(2): 170-178.

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少保守性网络化控制系统鲁棒保性能容错控制

The Less-conservative Robust Guaranteed Cost Fault-Tolerant Control of Networked Control Systems

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