Decentralized diagnosers in a state-based framework.
Published: 2007
Language: eng
Number of pages: 193
ISBN-13: 9780494274590
Description: 2007 Fault diagnosis in the state-based discrete-event system framework is studied. First, the resonating-cycle test for diagnosability of centralized diagnosers is derived, leading to an efficient algorithm which significantly reduces computational complexity. Second, design parameters of agents and communication protocols of decentralized state-based diagnosers are examined. Third, basic principles for state estimation are derived, and a simple condition to test consistency of state estimators is determined. Finally, three decentralized state-based diagonsers (DSBDs) are studied in detail. DSBD A involves communication of observations. It can be decoupled into subsystems which can be analyzed using earlier methods. Algorithms to optimize DSBD A networks are examined. DSBD B involves communication of observations and confirmed faults. DSBD C involves communication of observations and fault estimates. For both DSBD B and DSBD C, a consistent state estimator is specified, and diagnosability conditions stated. A structure-based diagnosability test is also derived for DSBD B.
Notes: Source: Masters Abstracts International, Volume: 45-06, page: 3291.

Thesis (M.A.Sc.)--University of Toronto, 2007.

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