NDLI: Fault Modeling in Discrete Event Systems Using Petri Nets

Content Provider	ACM Digital Library
Author	Nazemzadeh, Payam Zareiee, Meisam Dideban, Abbas
Copyright Year	2013
Abstract	In this article a model-based controller reconfiguration method for fault-tolerant control of discrete event systems has been introduced. In this method, we model the fault conditions for each specified fault as a new model called fault model. The system then consists of three different models called process, specification and fault. The faulty parts of the system are not permitted to do any job and the controller tries to enforce the specifications by other parts of the system. With this method, the controller reconfiguration problem for fault- tolerant control of discrete event systems converts to the problem of synchronizing the process, specification and fault model. We must synthesize a supervisor that can enforce both specifications and faults status. If this supervisor can be determined, we can achieve a fault-tolerant controller. Implementing both specification and fault models in the system, may lead to a large number of forbidden states and constraints and so on a more complicated forbidden states problem must be solved. The application of constraints simplification methods is shown. By the existing methods for offline simplifying of constraints, we can arrive at a simplified fault tolerant controller.
Starting Page	1
Ending Page	19
Page Count	19
File Format	PDF
ISSN	15399087
e-ISSN	15583465
DOI	10.1145/2406336.2406348
Volume Number	12
Issue Number	1
Journal	ACM Transactions on Embedded Computing Systems (TECS)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2013-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discrete event systems Petri nets Fault-tolerant Forbidden states Supervisory control
Content Type	Text
Resource Type	Article
Subject	Hardware and Architecture Software

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