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Order picking in an automatic warehouse: Solving online asymmetric TSPs

Author

Listed:
  • Norbert Ascheuer
  • Martin Grötschel
  • Atef Abdel-Aziz Abdel-Hamid

Abstract

We report on a joint project with industry that had the aim to sequence transportation requests within an automatic storage system in such a way that the overall travel time is minimized. The manufacturing environment is such that scheduling decisions have to be made before all jobs are known. We have modeled this task as an online Asymmetric Traveling Salesman Problem (ATSP). Several heuristics for the online ATSP are compared computationally within a simulation environment to judge which should be used in practice. Compared to the priority rule used so far, the optimization package reduced the unloaded travel time by about 40%. Because of these significant savings our procedure was implemented as part of the control software for the stacker cranes of the storage systems. Copyright Springer-Verlag Berlin Heidelberg 1999

Suggested Citation

  • Norbert Ascheuer & Martin Grötschel & Atef Abdel-Aziz Abdel-Hamid, 1999. "Order picking in an automatic warehouse: Solving online asymmetric TSPs," Mathematical Methods of Operations Research, Springer;Gesellschaft für Operations Research (GOR);Nederlands Genootschap voor Besliskunde (NGB), vol. 49(3), pages 501-515, July.
    • Handle: RePEc:spr:mathme:v:49:y:1999:i:3:p:501-515
    DOI: 10.1007/s001860050064
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    Citations

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    Cited by:

    1. Gu, Jinxiang & Goetschalckx, Marc & McGinnis, Leon F., 2007. "Research on warehouse operation: A comprehensive review," European Journal of Operational Research, Elsevier, vol. 177(1), pages 1-21, February.
    2. Kai Gutenschwager & Christian Niklaus & Stefan Voß, 2004. "Dispatching of an Electric Monorail System: Applying Metaheuristics to an Online Pickup and Delivery Problem," Transportation Science, INFORMS, vol. 38(4), pages 434-446, November.
    3. Nikolakopoulos, Athanassios & Sarimveis, Haralambos, 2007. "A threshold accepting heuristic with intense local search for the solution of special instances of the traveling salesman problem," European Journal of Operational Research, Elsevier, vol. 177(3), pages 1911-1929, March.
    4. Henry Lau & Ying Zhao, 2008. "Integrated scheduling of handling equipment at automated container terminals," Annals of Operations Research, Springer, vol. 159(1), pages 373-394, March.
    5. Fangyu Chen & Hongwei Wang & Yong Xie & Chao Qi, 2016. "An ACO-based online routing method for multiple order pickers with congestion consideration in warehouse," Journal of Intelligent Manufacturing, Springer, vol. 27(2), pages 389-408, April.

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