Research on Two-stage Order Picking Sequencing for Intensive Shelf

¹ Associate Professor of Beijing Wuzi University, China; Visiting Assistant Professor in CSUSB, California State University, San Bernardino, USA
² Professor of Beijing Wuzi University
³ Student of Capital University of Economics and Business

^a Corresponding author: xue.tian@csusb.edu

Abstract

The increasingly usage of Intensive shelves, greatly increase the utilization of storage space, but also is more demanding on order picking time . Based on the storage layout of intensive mobile shelves, this paper combines the time cost of shelf movement with the moving distance under the guidance of seeking global optimum. Transform the single order picking process into TSP problem, while considering the picking process. The waiting cost of the order, and the minimum of the picking cost and the waiting cost of the whole batch of orders requiring shelf movement, to establish a two-stage mathematical model of the order picking order. Then, the algorithm for solving the model is designed, and the simulation is carried out by numerical examples to illustrate the law and characteristics of the problem more vividly, in order to provide reference and reference for the order picking activities of intensive mobile shelves.