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Order Picking Optimization in Carousels Storage System

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  • Xiong-zhi Wang
  • Guo-qing Wang
  • Xiao-chun Li

Abstract

This paper addresses the order picking problem in a material handling system consisting of multiple carousels and one picker. Carousels are rotatable closed-loop storage systems for small items, where items are stored in bins along the loop. An order at carousels consists of n different items stored there. The objective is to find an optimal picking sequence to minimizing the total order picking time. After proving the problem to be strongly NP-hard and deriving two characteristics, we develop a dynamic programming algorithm (DPA) for a special case (two-carousel storage system) and an improved nearest items heuristics (INIH) for the general problem. Experimental results verify that the solutions are quickly and steadily achieved and show their better performance.

Suggested Citation

  • Xiong-zhi Wang & Guo-qing Wang & Xiao-chun Li, 2013. "Order Picking Optimization in Carousels Storage System," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-8, October.
    • Handle: RePEc:hin:jnlmpe:692701
    DOI: 10.1155/2013/692701
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