• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2024, Vol. 60 ›› Issue (22): 192-203.doi: 10.3901/JME.2024.22.192

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Energy-efficient Distributed Welding Shop Scheduling Based on Multi-objective Seagull Algorithm

LU Chao1, TIAN Hezi1, LI Xinyu2, ZHANG Biao   

  1. 1. School of Computer Science, China University of Geosciences, Wuhan 430074;
    2. State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong Universityof Science and Technology, Wuhan 430074;
    3. School of Computer Science and Technology, Liaocheng University, Liaocheng 252000
  • Received:2023-11-25 Revised:2024-06-20 Online:2024-11-20 Published:2025-01-02
  • About author:10.3901/JME.2024.22.192

Abstract: For the distributed welding shop scheduling problem, a mathematical model with the objective of minimizing the maximum completion time and total energy consumption is developed. In order to solve this optimization problem, an improved multi-objective seagull algorithm is proposed. The algorithm makes the following three main improvements: A weight matrix based on multiple critical paths is designed to update the number of welders assigned to each job; the discretization operation of the multi-objective seagull algorithm is redesigned according to the characteristics of the distributed welding shop; Pareto front selection strategy is introduced. These improved methods not only reduce the maximum completion time and total energy consumption, but also improve the search efficiency. Finally, the improved seagull algorithm is compared with other algorithms in several cases of different scales, and the experimental results verify the superiority of the proposed algorithm.

Key words: multi-objective optimization, welding shop, energy-efficient scheduling, critical path, discretization

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