Industrial Engineering Journal ›› 2021, Vol. 24 ›› Issue (3): 68-76,114.doi: 10.3969/j.issn.1007-7375.2021.03.009

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A Research on Batch Scheduling with Non-identical Job Sizes Considering Parallel Processes

TANG Hongtao, YANG Zhipeng, LIU Jiayi   

  1. School of Mechanical and Electrical Engineering, Wuhan University of Technology, Wuhan 430070, China
  • Received:2019-12-20 Published:2021-06-26

Abstract: Considering that the batch process is multi-constrained with non-identical job sizes in foundry enterprises, a parallel process batch scheduling model is constructed, with the maximum makespan and sandbox vacancy rate as the optimization objective on the premise that the job can be parallel, an improved harmony search algorithm designed to solve the scheduling model, and a single process code method and two machine allocation rules proposed to solve the problems of batch division, sandbox selection, process allocation and machine selection. In the algorithm, a new harmony generation method is proposed. At the same time, the simulated annealing algorithm is added to make it jump out of the local optimal solution and tend to the global optimal solution. Finally, a simulation experiment is carried out based on the actual production data of the enterprise to prove the effectiveness of the proposed model.

Key words: process parallel, batch scheduling, multi-constrained, harmony search algorithm

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