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Observer-based residual design for nonlinear systems with unknown inputs

conference contribution
posted on 06.12.2017, 00:00 authored by Poh TehPoh Teh
This paper presents unknown-input observer-based approach for robust fault detection and isolation of a class of nonlinear Lipschitz systems subject to unknown inputs or disturbances. Residual signals are generated by bank of observers to detect and isolate between actuator faults and sensor faults. The effect of unknown inputs or disturbances can be decoupled from the residual signals by using the generalized inverse method. Necessary and sufficient conditions for the existence and stability of low-order nonlinear unknown input functional observer are derived. A design procedure for the generation of residual signals to detect and isolate actuator and sensor faults is developed using the proposed unknown-input observer-based solution.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Parent Title

Proceedings of the 2011 Australian Control Conference, 10-11 November 2011, Melbourne Australia

Start Page

198

End Page

204

Number of Pages

7

Start Date

01/01/2011

ISBN-13

9780858259874

Location

Melbourne, Australia

Publisher

IEEE

Place of Publication

Melbourne, Vic.

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Faculty of Sciences, Engineering and Health; Institute for Resource Industries and Sustainability (IRIS);

Era Eligible

Yes

Name of Conference

Australian Control Conference