BDD-Based Synthesis of Fail-Safe Supervisory Controllers for Safety-Critical Discrete Event Systems

Document Type

Article

Publication Date

9-1-2016

Abstract

Sophisticated hardware/software and harsh environment in safety-critical discrete event systems may cause system failures that can lead to catastrophic consequences. Therefore, keeping the system in a safe mode even after the occurrence of a fault is critically important. This paper addresses the problem by first extending net condition/event systems with uncontrollable transitions that allows one to well represent controllable and uncontrollable events and cater for modeling normal and abnormal events in safety-critical systems. A binary decision diagram-based symbolic supervisor synthesis method is proposed to ensure time and space efficiency when dealing with a practical supervisory control problem. As a case study, a high-speed railway station is used to illustrate the proposed concepts and method.

Identifier

84992305856 (Scopus)

Publication Title

IEEE Transactions on Intelligent Transportation Systems

External Full Text Location

https://doi.org/10.1109/TITS.2016.2515063

ISSN

15249050

First Page

2385

Last Page

2394

Issue

9

Volume

17

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