 A decision model to determine the number of shuttles in a tier-to-tier SBS/RSYunsoo Ha and Junjae Chae International Journal of Production Research, 2019, vol. 57, issue 4, 963-984 Abstract: Shuttle-based storage and retrieval systems (SBS/RSs), which are designed to increase throughput capacity and flexibility, are a type of automated storage and retrieval system used for lightweight loads. SBS/RSs can increase throughput capacity by using multiple shuttles and elevators as storage and retrieval machines (SRMs). They can also facilitate improvements in flexibility since they are able to adjust the number of SRMs according to transaction demands. Thus, determining the number of shuttles is an important issue in tier-to-tier SBS/RSs. In this paper, a decision model to determine the number of shuttles is proposed. The model is based on the travel time model, and it considers parameters such as the physical configuration, velocity profile and the probability that the shuttle operates a dual command. Finally, the throughput capacity from the travel time model is compared with that from a simulation-based approach in order to verify the effects of the model. In addition, a critical discussion regarding the characteristics of the tier-to-tier system is provided. Date: 2019 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:taf:tprsxx:v:57:y:2019:i:4:p:963-984 Ordering information: This journal article can be ordered from DOI: 10.1080/00207543.2018.1476787 Access Statistics for this article International Journal of Production Research is currently edited by Professor A. Dolgui More articles in International Journal of Production Research from Taylor & Francis Journals |
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