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Controllability of Strongly and Weakly Dependent Siphons under Disturbanceless Control

Author(s): Daniel Yuh Chao | Kuo-Chiang Wu | Jiun-Ting Chen | Mike Y. J. Lee

Journal: Intelligent Control and Automation
ISSN 2153-0653

Volume: 02;
Issue: 04;
Start page: 310;
Date: 2011;
Original page

Keywords: Petri Nets | Siphons | Controllability | FMS | S3PR

Li and Zhou propose to add monitors Vs to elementary siphons S only while controlling the rest of dependent siphons - important for large systems but far from being maximally permissive. The control policy for weakly dependent siphons (WDS) is rather conservative due to some negative terms in the controllability. We show that this is no longer true as can be shown that it has the same controllability as that for strongly dependent siphons.
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