Nonhomogeneous Decentralized Supervisory Control of Discrete Event Dynamic Systems

Kwang-Hyun CHO  Jong-Tae LIM  

IEICE TRANSACTIONS on Information and Systems   Vol.E80-D   No.5   pp.605-607
Publication Date: 1997/05/25
Online ISSN: 
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Automata,Languages and Theory of Computing
discrete event dynamic systems,  decentralized supervisory control,  locally controllable complementary tuple,  nonhomogeneous decentralized supervisory control,  

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The supervisory control theory of discrete event dynamic systems was proposed in the framework of automata and formal languages. The concept of decentralized supervisory control was developed for the local supervisor Si whose concurrent operation results in the closed-loop language L (Si/G) equal to that of global supervisor, L (S/G). In this letter we extend this concept by considering the problem of optinal combination of decentralized with centralized control in case pure decentralized control happens to be inadequate. We introduce the concept of locally controllable complementary tuple and present an analytical framework for nonhomogeneous decentralized supervisory control systems.