[1]LIU Dong,SONG Yuchuan,YANG Yunfan,et al.Batch scheduling algorithm for flexible machining and assemblyjob shop when the machine breaks down[J].CAAI Transactions on Intelligent Systems,2022,17(3):556-567.[doi:10.11992/tis.202101038]
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
17
Number of periods:
2022 3
Page number:
556-567
Column:
学术论文—智能系统
Public date:
2022-05-05
- Title:
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Batch scheduling algorithm for flexible machining and assemblyjob shop when the machine breaks down
- Author(s):
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LIU Dong; SONG Yuchuan; YANG Yunfan; LEI Qi
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State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
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- Keywords:
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flexible assembly job shop scheduling; sublots and batches; machine breakdown; dynamic scheduling; local search; genetic algorithm; completion time; hybrid greed decoding
- CLC:
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TP278
- DOI:
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10.11992/tis.202101038
- Abstract:
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To solve the problem of low resource utilization in traditional independent scheduling of machining and assembly by stages, the machining and assembly are simultaneously scheduled. An improved genetic algorithm is designed to solve the problem by considering the batch and sublots of the workpiece. First, a mathematical model is established to minimize the maximum completion time. According to the problem characteristics, a neighborhood structure with the workpiece’s last process is proposed, which enhances the local searching ability of the algorithm and improves the overall solution quality. Furthermore, a hybrid greed decoding method based on the load balancing of assembly equipment is designed to complete its selection. Considering the characteristics of machine breakdown in a real workshop, a corresponding response strategy and chromosome changing rule are introduced to solve the dynamic scheduling problem. Finally, the feasibility and effectiveness of the proposed algorithm and strategy for solving the problem are verified by example analysis.