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AIP Conf. Proc. / Volume 1107 / Issue 1

Supervisor Localization: A Top-Down Approach to Distributed Control of Discrete-Event Systems

AIP Conf. Proc. -- March 5, 2009 -- Volume 1107, pp. 302-308
INTELLIGENT SYSTEMS AND AUTOMATION: 2nd Mediterranean Conference on Intelligent Systems and Automation (CISA'09); doi:10.1063/1.3106490

Issue Date: 5 March 2009

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ABSTRACT

K. Cai^a and W. M. Wonham^a
^aSystems Control Group, Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada

Apurely distributed control paradigm is proposed for discrete-event systems (DES).In contrast to control by one or more external supervisors,distributed control aims to design built-in strategies for individual agents.First a distributed optimal nonblocking control problem is formulated. Tosolve it, a top-down localization procedure is developed which systematicallydecomposes an external supervisor into local controllers while preserving optimalityand nonblockingness. An efficient localization algorithm is provided to carryout the computation, and an automated guided vehicles (AGV) examplepresented for illustration. Finally, the `easiest' and `hardest' boundary casesof localization are discussed. ©2009 American Institute of Physics

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