Estimation of states, faults and unknown disturbances in non-linear systems

Aldeen, M. and Sharma, R. (2008) Estimation of states, faults and unknown disturbances in non-linear systems. International Journal of Control, 81 8: 1195-1201. doi:10.1080/00207170601087937

Author Aldeen, M.
Sharma, R.
Title Estimation of states, faults and unknown disturbances in non-linear systems
Journal name International Journal of Control   Check publisher's open access policy
ISSN 0020-7179
Publication date 2008-08
Sub-type Article (original research)
DOI 10.1080/00207170601087937
Volume 81
Issue 8
Start page 1195
End page 1201
Total pages 7
Place of publication Colchester, Essex, United Kingdom
Publisher Taylor & Francis
Language eng
Abstract In this paper, we extend existing theory on non-linear unknown input observer design to a wider class of non-linear systems where the systems are subject to unknown input and output disturbances and experience faults. The approach used is to decouple the faults and unknown disturbances from the rest of the system through a series of transformations on state and output equations. Once total disturbance decoupling is achieved, an appropriate observer for the disturbance free part of the non-linear system is proposed and designed. The designed observer is, subsequently, used for estimation of unknown inputs, outputs, and fault signals. Two examples are given for illustration.
Keyword Non-linear observer
Fault detection
Unknown inputs
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: ERA 2012 Admin Only
School of Information Technology and Electrical Engineering Publications
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 16 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 31 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Thu, 05 Jan 2012, 14:09:00 EST by Rahul Sharma on behalf of School of Information Technol and Elec Engineering