Existence conditions for unknown input functional observers

Fernando, T., MacDougall, S., Sreeram, V. and Trinh, H. 2012, Existence conditions for unknown input functional observers, International journal of control, vol. 86, no. 1, pp. 22-28.

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Title Existence conditions for unknown input functional observers
Author(s) Fernando, T.
MacDougall, S.
Sreeram, V.
Trinh, H.ORCID iD for Trinh, H. orcid.org/0000-0003-3438-9969
Journal name International journal of control
Volume number 86
Issue number 1
Start page 22
End page 28
Total pages 7
Publisher Taylor & Francis
Place of publication Essex, England
Publication date 2012-01
ISSN 0020-7179
Keyword(s) functional observers
unknown input functional observers
unknown input matching condition
Summary This article presents necessary and sufficient conditions for the existence and design of an unknown input Functional observer. The existence of the observer can be verified by computing a nullspace of a known matrix and testing some matrix rank conditions. The existence of the observer does not require the satisfaction of the observer matching condition (i.e. Equation (16) in Hou and Muller 1992, ‘Design of Observers for Linear Systems with Unknown Inputs’, IEEE Transactions on Automatic Control, 37, 871–875), is not limited to estimating scalar functionals and allows for arbitrary pole placement. The proposed observer always exists when a state observer exists for the unknown input system, and furthermore, the proposed observer can exist even in some instances when an unknown input state observer does not exist.
Language eng
Field of Research 090602 Control Systems, Robotics and Automation
010203 Calculus of Variations, Systems Theory and Control Theory
010204 Dynamical Systems in Applications
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, Taylor & Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30049630

Document type: Journal Article
Collection: School of Engineering
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