| 1. |
- Mashaei, Maziar, 1973, et al.
(author)
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Optimal Design of a Decoupled Multiple-Loop Pallet System for Cyclic Flexible Manufacturing Plants
- 2010
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In: 6th annual IEEE International Conference on Automation Science and Engineering. - 9781424454471 ; , s. 433-438
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Conference paper (peer-reviewed)abstract
- Handling and locating pallet system is one of the most important subsystems in a flexible production plant. Theimpact of pallet systems parameters on process and energy efficiency of production plants has been verified and examined by a number of studies in the literature. In this paper, introducing novel design constraints for pallets and buffers, a new optimization algorithm under linear constraint models is developed. It generates the precise optimal values for the most challenging variables in a decoupled multiple-loop pallet system. The design variables are number of pallets, conveyor velocity, scheduling of parts, and buffer capacities. In a casestudy, the optimization algorithm is compared with a moredetailed simulation model. The differences between the solutions are minor, although the optimization algorithm only uses partial information, and the computation time is much lower compared to the simulation approach.
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| 2. |
- Mashaei, Maziar, 1973, et al.
(author)
-
Optimal number of pallets for reconfigurable cyclic manufacturing plants
- 2009
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In: 2009 IEEE 14th International Conference on Emerging Technologies & Factory Automation, ETFA 2009, Mallorca, Spain. - 1946-0759. - 9781424427284 ; , s. 1-8
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Conference paper (peer-reviewed)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.
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