Paper Info
Title
Monitoring Discrete Event Systems Using Petri Net Embeddings
Abstract
In this paper we discuss a methodology for monitoring failures and other activity in discrete event systems that are described by Petri nets. Our method is based on embedding the given Petri net model in a larger Petri net that retains the functionality and properties of the given one, perhaps in a non-separate (that is, not immediately identifiable) way. This redundant Petri net embedding introduces "structured redundancy" that can be used to facilitate fault detection, identification and correction, or to offer increased capabilities for monitoring and control. We focus primarily on separate embeddings in which the functionality of the original Petri net is retained in its exact form. Using these embeddings, we construct monitors that operate concurrently with the original system and allow us to detect and identify different types of failures by performing consistency checks between the state of the original Petri net and that of the monitor. The methods that we propose are attractive because the resulting monitors are robust to failures, they may not require explicit acknowledgments from each activity, and their construction is systematic and easily adaptable to restrictions in the available information. We also discuss briefly how to construct nonseparate Petri net embeddings.
Year
Venue
Keywords
1999
ICATPN
monitoring discrete event systems,discrete event system,original system,petri net,explicit acknowledgment,separate embeddings,available information,different type,exact form,fault detection,consistency check
Field
DocType
ISBN
Parity bit,Monitoring and control,Embedding,Petri net,Parity-check matrix,Fault detection and isolation,Computer science,Process architecture,Redundancy (engineering),Distributed computing
Conference
3-540-66132-8
Citations 
PageRank 
References 
41
3.15
4
Authors
2
Name
Order
Citations
PageRank
Christoforos N. Hadjicostis11425127.48
George C. Verghese220826.26