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	Robust state estimation and fault diagnosis for uncertain hybrid systems
	Wang, Wenhui ; Zhou, D. H. ; Li, Zhengxi
	2010-05-06 ; 2010-05-06
关键词	hybrid systems robust hybrid observers robustness detectability identifiability stability fault detection and isolation MULTIPLE-MODEL ESTIMATION VARIABLE-STRUCTURE DYNAMIC-SYSTEMS OBSERVERS Mathematics, Applied Mathematics
中文摘要	Robust state estimation and fault diagnosis are challenging problems in the research into hybrid systems. In this paper a novel robust hybrid observer is proposed for a class of hybrid systems with unknown inputs and faults. Model uncertainties, disturbances and faults are represented as structured unknown inputs. The robust hybrid observer consists of a mode observer for mode identification and a continuous observer for continuous state estimation and mode transition detection. It is shown that the mode can be identified correctly and the continuous state estimation error is exponentially uniformly bounded. Robustness to model uncertainties and disturbances can be guaranteed for the hybrid observer by disturbance decoupling. Furthermore, the delectability and mode identifiability conditions are rigorously analyzed. On the basis of the robust hybrid observer, a robust fault detection and isolation scheme is presented also in the paper. Simulations of a hybrid four-tank system show the proposed approach is effective. (c) 2006 Elsevier Ltd. All rights reserved.
语种	英语 ; 英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/9562]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Wenhui,Zhou, D. H.,Li, Zhengxi. Robust state estimation and fault diagnosis for uncertain hybrid systems[J],2010, 2010.
APA	Wang, Wenhui,Zhou, D. H.,&Li, Zhengxi.(2010).Robust state estimation and fault diagnosis for uncertain hybrid systems..
MLA	Wang, Wenhui,et al."Robust state estimation and fault diagnosis for uncertain hybrid systems".(2010).

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