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    政大機構典藏 > 商學院 > 資訊管理學系 > 期刊論文 >  Item 140.119/75230
    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/75230


    Title: Controllability of weakly dependent siphons under elementary-siphon control
    Authors: Chao, Daniel Yuh;Chen, Jiun-Ting;Huang, J.-S.
    趙玉;陳俊廷
    Contributors: 資管系
    Keywords: Deadlock prevention;Dependent siphon;Elementary siphon;Linear inequalities;Linear integer programming;Redundancy elimination;Resource requirements;Sequential process;Integer programming;Petri nets;Siphons;Robotics
    Date: 2013
    Issue Date: 2015-05-21 16:16:13 (UTC+8)
    Abstract: Monitors are added upon problematic siphons to avoid deadlocks. Li and Zhou add monitors to elementary siphons only while controlling the rest dependent siphons to save cost. After failing a Marking Linear Inequality (MLI) test, they perform a Linear Integer Programming (LIP) test (NP-hard). We proposed a new MLI test earlier to avoid the LIP and extended it to S3PR2 (systems of simple sequential processes with general resource requirements) for strongly dependent siphons (SDS). The control policy for weakly dependent siphons (WDS) is rather conservative due to some negative terms in the MLI. This paper shows that WDS and SDS have the same controllability (i.e., MLI). As a result, the control for WDS needs no longer be that conservative. We also develop an optimization (by redundancy elimination) of the computation required for LIP test to ensure deadlock prevention of S3PR (Systems of Simple Sequential Processes with Resources). A favorable result for this policy is that any n-dependent (n>2) WDS (similar to SDS) needs no monitor and hence the complexity for synthesizing a controller becomes polynomial. © (2013) Trans Tech Publications, Switzerland.
    Relation: Applied Mechanics and Materials, 373-375, 1413-1427
    Data Type: article
    DOI 連結: http://dx.doi.org/10.4028/www.scientific.net/AMM.373-375.1413
    DOI: 10.4028/www.scientific.net/AMM.373-375.1413
    Appears in Collections:[資訊管理學系] 期刊論文

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