Maintenance scheduling incorporating dynamics of production system and real-time information from workstations

  • Authors:

  • Ali Arab;Napsiah Ismail;Lai Soon Lee

  • Affiliations:

  • Member of Young Researchers Club, Islamic Azad University, Firouzkooh, Iran;Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, University of Putra Malaysia (UPM), Serdang, Malaysia 43400;Department of Mathematics, Faculty of Science, University of Putra Malaysia (UPM), Serdang, Malaysia 43400

  • Venue:
  • Journal of Intelligent Manufacturing
  • Year:
  • 2013

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Abstract

In this paper, a new approach to maintenance scheduling for a multi-component production system which takes into account the real-time information from workstations including remaining reliability of equipments as well as work-in-process inventories in each workstation is proposed. To model dynamics of the system, other information like production line configuration, cycle times, buffers' capacity and mean time to repair of machines are also considered. Using factorial experiment design the problem is formulated to comprehensively monitor the effects of each possible schedule on throughput of the production system. The optimal maintenance schedule is searched by genetic algorithm-based optimization engine implemented in a simulation optimization platform. The proposed approach exploits all of makespans of planning horizon to find the best opportunity to perform maintenance actions on degrading machines in a way that maximizes the system throughput and mitigates the production losses caused by imperfect traditional maintenance strategies. Finally the proposed method is tested in a real production line to magnify the accuracy of proposed scheduling method. The experimental results indicate that the proposed approach guarantees the operational productivity and scheduling efficiency as well.