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      • Department of Industrial Engineering
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      Rescheduling frequency in an FMS with uncertain processing times and unreliable machines

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      Author
      Sabuncuoğlu, İ.
      Karabuk, S.
      Date
      1999
      Source Title
      Journal of Manufacturing Systems
      Print ISSN
      0278-6125
      Publisher
      Elsevier
      Volume
      18
      Issue
      4
      Pages
      268 - 283
      Language
      English
      Type
      Article
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      Abstract
      This paper studies the scheduling/rescheduling problem in a multi-resource FMS environment. Several reactive scheduling policies are proposed to address the effects of machine breakdowns and processing time variations. Both off-line and on-line scheduling methods are tested under a variety of experimental conditions. The performance of the system is measured for mean tardiness and makespan criteria. The relationships between scheduling frequency and other scheduling factors are investigated. The results indicated that a periodic response with an appropriate period length would be sufficient to cope with interruptions. It was also observed that machine breakdowns have more significant impact on the system performance than processing time variations. In addition, dispatching rules were found to be more robust to interruptions than the optimum-seeking off-line scheduling algorithm. A comprehensive bibliography is also included in the paper.
      Keywords
      Rescheduling
      Scheduling
      Reactive Control
      Permalink
      http://hdl.handle.net/11693/11104
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/S0278-6125(00)86630-3
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