Solving production scheduling with earliness/tardiness penalties by constraint programming

  • Authors:
  • Jan Kelbel;Zdenĕk Hanzálek

  • Affiliations:
  • Department of Control Engineering, Faculty of Electrical Engineering, Czech Technical University in Prague, Praha 2, Czech Republic 121 35;Department of Control Engineering, Faculty of Electrical Engineering, Czech Technical University in Prague, Praha 2, Czech Republic 121 35

  • Venue:
  • Journal of Intelligent Manufacturing
  • Year:
  • 2011

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Abstract

This paper deals with an application of constraint programming in production scheduling with earliness and tardiness penalties that reflects the scheduling part of the Just-In-Time inventory strategy. Two scheduling problems are studied, an industrial case study problem of lacquer production scheduling, and also the job-shop scheduling problem with earliness/tardiness costs. The paper presents two algorithms that help the constraint programming solver to find solutions of these complex problems. The first algorithm, called the cost directed initialization, performs a greedy initialization of the search tree. The second one, called the time reversing transformation and designed for lacquer production scheduling, reformulates the problem to be more easily searchable when the default search or the cost directed initialization is used. The conducted experiments, using case study instances and randomly generated problem instances, show that our algorithms outperform generic approaches, and on average give better results than other nontrivial algorithms.