An analysis of the end-of-aisle order picking system: Multi-aisle served by a single order picker |
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| Institution: | 1. Faculty of Economics and Management, Otto-von-Guericke University Magdeburg, Magdeburg 39106, Germany;2. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China;1. Department of Industrial Engineering, Pusan National University, Busan 46241, Republic of Korea;2. Logistics System Research Team, Korea Railroad Research Institute, Gyeonggi-do 16105, Republic of Korea\n;1. Department of Industrial Engineering, Izmir University of Economics, Balcova, Izmir, 35330 Turkey Tel: 232-279-2525;7. Manufacturing Engineering Laboratory of Tlemcen (MELT), University of Tlemcen, Algeria;71. Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, SI-2000, Maribor, Slovenia |
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| Abstract: | This study deals with an end-of-aisle order picking system in a miniload automated storage/retrieval system (AS/RS). The system has a horse-shoe style buffer at the front end of each aisle. A conveyor system delivers the containers through the buffer positions. Earlier studies for the system assumed that an order picker serves only a single aisle. In general, however, an order picker can server two or more aisles for labor cost saving, and so this paper assume that an order picker serves a number of aisles in a predetermined order. The system can be modeled as a queueing system with a limited queue length and this paper analyzes the queueing model with supplementary variable technique to find the system's long-run behavior. Then, it proposes a simple optimization model to find an optimal buffer size. To illustrate the results, some examples are included into each chapter. |
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