A comparison of alternative conceptualizing tools for automated storage and retrieval systems


Eldemir F. , GRAVES R., MALMBORG C.

INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH, cilt.41, ss.4517-4539, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 41 Konu: 18
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1080/00207540310001595846
  • Dergi Adı: INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
  • Sayfa Sayıları: ss.4517-4539

Özet

The throughput performance model and the state equation model are alternative analytical approaches for determining the proportion of dual versus single command crane cycles in automated storage and retrieval systems that utilize opportunistic interleaving. The different assumptions underlying these models result in biases in the estimation of expected crane cycle times. The magnitude of the biases is investigated to assess whether the use of the older, less computationally efficient state equation model is still warranted in practical conceptualizing situations. The results suggest that the TP model is a dominating alternative for AS/RS conceptualizing applications.