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Probabilistic Approach to Fault Detection in Discrete Event Systems

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3 Author(s)
S. Deepa ; Control and Instrumentation, Department of Electrical and Electronics Engineering, College of Engineering, Guindy, Anna University ; P. Vanaja Ranjan ; S. Solai Manohar

Fault diagnosis is performed by an external observer/diagnoser that functions as a finite state machine and which has access to the input sequence applied to the system but has only limited access to the system state or output. The observer/diagnoser is only able to obtain partial information regarding the state of the given system at intermittent time intervals that are determined by certain synchronizing conditions between the system and the observer/diagnoser. By adopting a probabilistic framework, mathematical analysis has been made to optimally choose the synchronizing conditions and develop adaptive strategies that achieve a low probability of aliasing, i.e., a low probability that the external observer/diagnoser incorrectly declares the system as fault-free

Published in:

2007 International Conference on Signal Processing, Communications and Networking

Date of Conference:

22-24 Feb. 2007