Optimal number of pallets for reconfigurable cyclic manufacturing plants

Authors:
Maziar Mashaei;Bengt Lennartson;Fredrik Sannehed;Göran Abbestam
Affiliations:
Department of Signals and Systems, Chalmers University of Technology, Sweden and FlexLink AB, Göteborg Sweden;Department of Signals and Systems, Chalmers University of Technology, Sweden;FlexLink AB, Göteborg Sweden;FlexLink AB, Göteborg Sweden
Venue:
ETFA'09 Proceedings of the 14th IEEE international conference on Emerging technologies & factory automation
Year:
2009

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Abstract

In a cyclic manufacturing system, the number of pallets in a handling and locating pallet system (HLPS) can have a huge effect on the production cycle time. The complexity of calculating the optimal number of pallets that satisfies the minimal cycle time poses a challenging design problem. In this paper the optimal solution is presented for deterministic cyclic manufacturing systems having determined schedule of tasks for multi-product applications. Furthermore, a specific domain which includes the optimal number of pallets is obtained for any arbitrary schedule of various product types in an HLPS. To verify the optimal solution, a reconfigurable Colored Petri Net (CPN) model is developed for a simple X85 pallet system. For various cases of machine processing times, the optimal number of pallets is obtained for the suggested framework.