Energy-aware fuzzy job-shop scheduling for engine remanufacturing at the multi-machine level

Jiali Zhao, Shitong Peng, Tao Li, Shengping Lv, Mengyun Li, Hongchao Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

The rise of the engine remanufacturing industry has resulted in increased possibilities of energy conservation during the remanufacturing process, and scheduling could exert significant effects on the energy performance of manufacturing systems. However, only a few studies have specifically addressed energy-efficient scheduling for remanufacturing. Considering the uncertain processing time and routes and the operation characteristics of remanufacturing, we used the crankshaft as an illustrative case and built a fuzzy job-shop scheduling model to minimize the energy consumption during remanufacturing. An improved adaptive genetic algorithm was developed by using the hormone modulation mechanism to deal with the scheduling problem that simultaneously involves parallel machines, batch machines, and uncertain processing routes and time. The algorithm demonstrated superior performance in terms of optimal value, run time, and convergent generation in comparison with other algorithms. Computational results indicated that the optimal scheduling scheme is expected to generate 1.7 kW · h of energy saving for the investigated problem size. In addition, the scheme could improve the energy efficiency of the crankshaft remanufacturing process by approximately 5%. This study provides a basis for production managers to improve the sustainability of remanufacturing through energy-aware scheduling.

Original languageEnglish
Pages (from-to)474-488
Number of pages15
JournalFrontiers of Mechanical Engineering
Volume14
Issue number4
DOIs
StatePublished - Dec 1 2019

Keywords

  • adaptive genetic algorithm
  • energy efficiency
  • hormone modulation mechanism
  • remanufacturing scheduling
  • sustainable remanufacturing

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