Fault-tolerant control in discrete-event systems.
Published: 2004
Language: eng
Number of pages: 119
Description: Faults are common in complex systems. If not treated, faults in subsystems can propagate through the system and lead to catastrophic failures. Fault-tolerant control is therefore needed for system safety. Fault tolerance is the ability of a controlled system to maintain control objectives even if faults occurred. It can be obtained through fault-accommodation or reconfiguration, with acceptable degradation of performance. Fault-tolerant control has been studied over the last decade. It usually assumes that faults can be isolated and the system can be remedied after isolation. In this paper we relax these assumptions. By the techniques of fault diagnosis and state feedback control in a discrete-event framework, we introduce trace-feedback control for fault-tolerance. We define fault-accommodation and reconfiguration for systems with partial state information. Software procedures for control design are developed. A case study is provided to illustrate the design process.
Notes: Adviser:  R. H. S. Kwong.

Thesis (M.A.Sc.)--University of Toronto, 2004.

Electronic version licensed for access by U. of T. users.

Source: Masters Abstracts International, Volume: 42-06, page: 2283.

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