University of Twente Student Theses
Sequential zone picking systems and the integration of frequent item pairs in storage assignment
Trinh, HT (2021) Sequential zone picking systems and the integration of frequent item pairs in storage assignment.
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| Abstract: | Order picking, defined as the retrieval of products from their storage location in response to a specific customer order, is the most labour-intensive and time-critical operation in manual warehouse systems. The project aims to analyze theoretically and empirically sequential zone picking systems in which the picking area is divided into several picking zones or stations and connected by a conveyor. The items of an order are distributed to one or more boxes, and the items in a box are retrieved progressively by visiting stations in a sequence. To this end, two queuing models with finite capacity are designed to represent each setting. In the empirical study, frequent item pairs (FIP) are derived from a year of transaction data and integrated into the existing storage assignment. A simulation is then built to study the impact of the FIP integration on warehouse performance. Multiple key performance indicators are specified to quantify the impact. The simulation results show that FIP helps improve the warehouse performance; however, the effect may become negative when employing a greedy approach. |
| Item Type: | Essay (Master) |
| Clients: | Kramp Group BV, Varsseveld, Netherlands |
| Faculty: | EEMCS: Electrical Engineering, Mathematics and Computer Science |
| Subject: | 31 mathematics |
| Programme: | Applied Mathematics MSc (60348) |
| Link to this item: | https://purl.utwente.nl/essays/88107 |
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