The use of upstream and downstream information in scheduling semiconductor batch operations

J. W. Fowlers, J. K. Robinson, J. F. Bard

Research output: Contribution to journalArticlepeer-review

80 Scopus citations


This paper presents a control strategy that exploits and uses both upsueam and downstream information on the current and expected states of a semiconductor manufacturin-e facilit.v (.F AB) to make intelli-ee nt batch size decisions. Throug-h simulation, this strategy is compared with current methods that consider only uvstream information, as well as with aa-e neral threshold. T. he resultsconfirm that significant improvements in cycle rime can be realized by exploiting upstream information. Some additional improvement can be gained at low to moderate traffic intensities by looking downstre&. However, as iaffic intensity increases, use of downstream information can actually lead to longer delays, indicating that the scheduling of the batch machine may he more important than the scheduling of the serial machine in congested systems.

Original languageEnglish (US)
Pages (from-to)1849-1869
Number of pages21
JournalInternational Journal of Production Research
Issue number7
StatePublished - Jul 1995
Externally publishedYes

ASJC Scopus subject areas

  • Strategy and Management
  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering


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