An adaptive multi-parameter based dispatching strategy for single-loop interbay material handling systems

L. H. Wu, Pik Yin Mok, J. Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)


The automation of interbay systems in 300 mm semiconductor wafer fabrication systems (SWFSs) is complex due to the dynamic, stochastic and mass transportation demands, transportation deadlocks, and vehicle blockages. An adaptive multi-parameter based (AMP) dispatching policy is proposed to obtain better performance of the interbay material handling systems and SWFSs. The system parameters, including vehicle's distance, lot's due date, lot's waiting time, and lot's origin-destination buffer status parameters are simultaneously considered, and the multi-parameter's weight coefficients are adjusted adaptively by Takagi-Sugeno fuzzy logic method. With experimental data from an interbay system of 300 mm SWFSs and running simulation experiments, it is demonstrated that the proposed approach has better performance in terms of cycle time, throughput, due-date satisfaction rate, and vehicle utilization compared to conventional single- and multi-attribute dispatching methodologies.
Original languageEnglish
Pages (from-to)175-186
Number of pages12
JournalComputers in Industry
Issue number2
Publication statusPublished - 1 Feb 2011


  • Adaptive
  • Interbay material handling system
  • Multi-parameter
  • Semiconductor wafer fabrication
  • Vehicle dispatching

ASJC Scopus subject areas

  • Computer Science(all)
  • Engineering(all)

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