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Runtime Modeling of Flow for Dynamic Deadlock-free Scheduling in Service-oriented Factory Automation Systems

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Author(s): Popescu Corina | Cavia Soto Maria de los Angeles | Martinez Lastra Jose

Journal: IETE Technical Review
ISSN 0256-4602

Volume: 26;
Issue: 3;
Start page: 203;
Date: 2009;
Original page

Keywords: Deadlock handling | Factory automation | Manufacturing systems | Petri nets | Runtime modeling | Scheduling | Service oriented architecture.

ABSTRACT
Changes in equipment and production demand cannot be predicted at the design stage. Therefore, -decision taking mechanisms must rely on real time information collected from the shop floor. To perform scheduling and routing optimization, not only modifications in values of parameters of interest, but also in the flow itself must be accounted for. This paper addresses this problem and proposes a method to formally model, at runtime, the flow within a service-oriented manufacturing line. The resulting representation assists -deadlock- free dynamic scheduling of the system.
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