A modification of simplified drum-buffer-rope for re-entrant flow shop scheduling

Yung-Chia Chang, W. T. Huang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


This study proposes the layer production buffer to monitor the status of the buffer. A dispatching rule is applied to decide the priority of all orders by the buffer status deviation of each re-entrant layer with the consideration of the re-entry feature, termed as SDBRReentiy, in a RFS environment. To show our SDBRReentiy in a RFS, this paper compares four methods, the abovementioned method, traditional SDBR, the applications of the company K and critical ratio in a simulated RFS environment. The resulting outcomes that compare to six approaches indicate that our proposed method improving performance in a RFS. Hence, this method has better performances when an increase in re-entrance orders of product mix result in the better performance of a RFS. Furthermore, the bottleneck machines operate at full capacity.

Original languageEnglish
Pages (from-to)40-50
Number of pages11
JournalInformation Technology Journal
Issue number1
StatePublished - 1 Jan 2011


  • Drum-buffer-rope
  • Flow shop
  • Re-entry
  • Scheduling
  • Theory of constraints

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