Joint rolling-horizon scheduling of materials processing and lot-sizing with sequence-dependent setups

Joint rolling-horizon scheduling of materials processing and lot-sizing with sequence-dependent setups

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Article ID: iaor20083046
Country: Netherlands
Volume: 13
Issue: 4
Start Page Number: 337
End Page Number: 358
Publication Date: Aug 2007
Journal: Journal of Heuristics
Authors: , ,
Keywords: heuristics
Abstract:

A lot sizing and scheduling problem from a foundry is considered in which key materials are produced and then transformed into many products on a single machine. A mixed integer programming (MIP) model is developed, taking into account sequence-dependent setup costs and times, and then adapted for rolling horizon use. A relax-and-fix (RF) solution heuristic is proposed and computationally tested against a high-performance MIP solver. Three variants of local search are also developed to improve the RF method and tested. Finally the solutions are compared with those currently practiced at the foundry.

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