• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2021, Vol. 57 ›› Issue (5): 157-165.doi: 10.3901/JME.2021.05.157

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Research of Just-in-time Scheduling for Assembly Job Shop

LÜ Haili1,2, ZHU Jiatao1, WANG Zhengguo1, WU Shu1,2   

  1. 1. School of Logistics Engineering, Wuhan University of Technology, Wuhan 430063;
    2. Engineering Research Center for Port Logistics Technology and Equipment of Ministry of Education, Wuhan University of Technology, Wuhan 430063
  • Received:2020-04-20 Revised:2020-12-06 Online:2021-03-05 Published:2021-04-28

Abstract: Although job shop scheduling problem (JSP) has been extensively and intensively studied in the past few decades, most research aims at minimizing regular measures. The scheduling of the problems with regular measures only needs to process as early as possible. Compared with regular measures, minimizing the sum of earliness/tardiness penalties is a non-regular measure. For the scheduling problems with non-regular measures, it is impossible to optimize the goal by processing all the operations as early as possible, and the schedule generation process must be more complicated. Aiming at the scheduling problem with earliness and tardiness penalties, the subject of research is expanded from simple job shop (JSP) to assembly job shop (AJSP) to explore the general law of earliness and tardiness scheduling problems more widely. A three-stage adjustment heuristic is designed to generate a schedule, and the heuristic is combined with genetic algorithm for experimental analysis. Compared with the results of optimal results, the efficiency and effectiveness of the heuristic is proved. In addition, experimental results also reveal the impact of different methods in the process of generating a schedule, which may serve as guidelines for future research.

Key words: assembly job shop scheduling, earliness and tardiness cost, genetic algorithm, heuristic

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