Optimal Zone Boundaries for Two-class-based Compact 3D AS/RS

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Optimal Zone Boundaries for Two-class-based Compact 3D AS/RS

Author Info

Yu, Yugang
Koster, M.B.M. de (Erasmus Research Institute of Management (ERIM), RSM Erasmus University)

Abstract

Compact, multi-deep (3D), Automated Storage and Retrieval Systems (AS/RS) are becoming more common, due to new technologies, lower investment costs, time efficiency and compact size. Decision-making research on these systems is still in its infancy. We study a particular compact system with rotating conveyors for the depth movement and a Storage/Retrieval (S/R) machine for the horizontal and vertical movement of unit loads. We determine the optimal storage zone boundaries for such systems with two product classes: high and low turnover, by minimizing the expected Storage/Retrieval (S/R) machine travel time. We propose a mixed-integer nonlinear programming model to determine the zone boundaries. A decomposition algorithm and a one dimensional search scheme are developed to solve the model. The algorithm is complex, but the results are appealing since most of them are in closed-form and easy to apply to optimally layout the 3D AS/RS rack. The results are compared with those under random storage, and show that a significant reduction of the machine travel time can be obtained. Finally, a practical example is studied to demonstrate the use and validate our findings.

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Publisher Info
Paper provided by Erasmus Research Institute of Management (ERIM), ERIM is the joint research institute of the Rotterdam School of Management, Erasmus University and the Erasmus School of Economics (ESE) at Erasmus University Rotterdam. in its series Research Paper with number ERS-2007-034-LIS Revision_Date: 2009-07-29.

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Date of creation: 10 May 2007
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Handle: RePEc:dgr:eureri:300011309

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This paper has been announced in the following NEP Reports:

NEP-ALL-2007-07-20 (All new papers)
NEP-CMP-2007-07-20 (Computational Economics)

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

Park, Byung Chun & Foley, Robert D. & Frazelle, Edward H., 2006. "Performance of miniload systems with two-class storage," European Journal of Operational Research, Elsevier, vol. 170(1), pages 144-155, April. [Downloadable!] (restricted)
Le-Duc, T. & Koster, M.B.M. de & Yu, Yugang, 2006. "Optimal Storage Rack Design for a 3-dimensional Compact AS/RS," Research Paper ERS-2006-027-LIS Revision, Erasmus Research Institute of Management (ERIM), ERIM is the joint research institute of the Rotterdam School of Management, Erasmus University and the Erasmus School of Economics (ESE) at Erasmus Uni. [Downloadable!]

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