Estimation, Diagnosis, and Control in Discrete Event Systems in the Presence of Observability Constraints and Faults
Li, Lingxi
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https://hdl.handle.net/2142/81098
Description
Title
Estimation, Diagnosis, and Control in Discrete Event Systems in the Presence of Observability Constraints and Faults
Author(s)
Li, Lingxi
Issue Date
2008
Doctoral Committee Chair(s)
Basar, Tamer
Department of Study
Electrical and Computer Engineering
Discipline
Electrical and Computer Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Electronics and Electrical
Language
eng
Abstract
The final problem studied in the thesis is the problem of fault-tolerant control in Petri nets. In particular, we aim at providing tolerance against faults that may compromise the functionality of a given controller (modeled by a Petri net). We propose two approaches for the design of fault-tolerant redundant Petri net controllers. Under the reasonable assumption that the given controller is presumably designed to exactly meet the control specification of the plant to be controlled, we further require that the redundant Petri net controllers be bisimulation equivalent to the given, original controller (to retain identical control objectives). We obtain complete characterizations of redundant controllers along with necessary and sufficient conditions for bisimulation equivalence.
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