Interval observer design for uncertain discrete-time linear systems

被引:149
作者
Wang, Zhenhua [1 ]
Lim, Cheng-Chew [2 ]
Shen, Yi [1 ]
机构
[1] Harbin Inst Technol, Sch Astronaut, Harbin 150001, Heilongjiang, Peoples R China
[2] Univ Adelaide, Sch Elect & Elect Engn, Adelaide, SA 5005, Australia
基金
澳大利亚研究理事会; 中国国家自然科学基金;
关键词
Interval observer; Discrete-time; Linear systems; Linear matrix inequalities; FAULT-DETECTION; LPV SYSTEMS; OPTIMIZATION;
D O I
10.1016/j.sysconle.2018.04.003
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper proposes a novel interval observer design method for discrete-time linear systems with unknown but bounded disturbance and measurement noise. The proposed interval observer has a new structure that provides more design degrees of freedom. A direct method based on H-infinity technique is used to improve the accuracy of interval estimation. The design conditions are formulated into linear matrix inequalities, which can be efficiently solved. Two numerical examples are given to illustrate the design and validate the performance of the interval observers. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:41 / 46
页数:6
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