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Modular Synthesis of Maximally Permissive Opacity-Enforcing Supervisors for Discrete Event Systems
Shigemasa TAKAI Yuta WATANABE
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/03/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Concurrent Systems
discrete event system, supervisory control, opacity, maximally permissive supervisor, modular synthesis,
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In this paper, we study opacity-enforcing supervisory control of discrete event systems. We consider the case that the secrete behavior of the system is specified by multiple secret languages, and synthesize a maximally permissive supervisor that enforces opacity for all secret languages. We prove that, under a certain assumption on observable and uncontrollable events, a maximally permissive opacity-enforcing supervisor can be synthesized in a modular fashion.