Title
Robust diagnosis of discrete-event systems against permanent loss of observations
Abstract
We consider the problem of diagnosing the occurrence of a certain unobservable event of interest, the fault event, in the operation of a partially-observed discrete-event system subject to permanent loss of observations modeled by a finite-state automaton. Specifically, it is assumed that certain sensors for events that would a priori be observable may fail at the outset, thereby resulting in a loss of observable events; the diagnostic engine is not directly aware of such sensor failures. We explore a previous definition of robust diagnosability of a given fault event despite the possibility of permanent (and unknown a priori) loss of observations and present a polynomial time verification algorithm to verify robust diagnosability and a methodology to perform online diagnosis in this scenario using a set of partial diagnosers.
Year
DOI
Venue
2013
10.1016/j.automatica.2012.09.017
Automatica
Keywords
Field
DocType
Discrete-event systems,Fault diagnosis,Sensor failures,Robust diagnosability
Observable,Dilation (morphology),Automaton,Algorithm,Constructed language,Mathematics,Fault occurrence
Journal
Volume
Issue
ISSN
49
1
0005-1098
Citations 
PageRank 
References 
8
0.54
24
Authors
4
Name
Order
Citations
PageRank
Lilian K. Carvalho1576.84
Marcos V. Moreira212513.03
JoãO C. Basilio315115.63
StéPhane Lafortune41738181.23