Distributed sensor fault detection and isolation for nonlinear uncertain systems

Conference paper (2012)

Authors

V. Reppa University of Cyprus
Marios M. Polycarpou University of Cyprus
Christos G. Panayiotou University of Cyprus
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Sensor faults Fault detection Nonlinear systems Fault isolation Uncertain dynamic systems
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Published Date

2012

Language

English

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Abstract

This paper presents a design methodology and some analytical results for distributed sensor fault detection and isolation (SFDI) of a class of nonlinear uncertain systems. The proposed architecture is based on the design of local SFDI modules, which monitor the healthy operation of a set of sensors and aim to detect the faults in this set, using a dedicated nonlinear observer scheme. The multiple sensor fault isolation procedure is further enhanced by deriving a combinatorial decision logic that processes information from local SFDI modules. The performance of the proposed diagnostic scheme is analyzed in terms of its robustness with respect to the modeling uncertainties and conditions for ensuring fault detectability and isolability.