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Chinese Journal of Management Science ›› 2024, Vol. 32 ›› Issue (10): 146-155.doi: 10.16381/j.cnki.issn1003-207x.2021.1831

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Multi-objective Integrated Optimization of Flexible Resource Allocation and Scheduling in the Aerospace Production Workshop

Hui Li1(),Xi Wang1,Zhiya Zuo2   

  1. 1.School of Information, Central University of Finance and Economics, Beijing 102206, China
    2.Department of Information Systems, City University of HongKong, Hongkong 999077, China
  • Received:2021-09-08 Revised:2022-01-06 Online:2024-10-25 Published:2024-11-09
  • Contact: Hui Li E-mail:lihui@cufe.edu.cn

Abstract:

To cater to the multi-variety and small-batch characteristics of aerospace product manufacturing, flexible allocation and scheduling of resources in production workshops based on production planning is key to maintaining efficiency and response capability. In particular, an integrated optimization problem of resource allocation and scheduling is formulated and solved to minimize production delay, manufacturing costs, and total resources across multiple scenarios with various production resources, in-workshop transportation, and resource availability. A multi-objective programming model is first formulated based on a detailed delineation of our research questions. An improved multi-objective differential evolution (IMODE) algorithm is then put forward based on Pareto optimization to solve such an NP-hard problem efficiently. Upon obtaining a high-quality set of initial chromosomes based on heuristic search, the final solution of a Pareto set is derived from fast non-dominated sorting followed by iterative optimization through a differential evolution algorithm. Based on 11 scenarios with different combinations of job numbers and due dates generated from empirical data, IMODE on average outperforms NSGA-II and MOPSO, two widely-adopted algorithms for multi-objective optimization. Furthermore, our additional analyses identify a ceiling effect of resource quantity on overdue days and manufacturing costs. When there is a large number of jobs with insufficient resources, on the one hand, increasing the number of resources can mitigate production delays and costs. On the other hand, the allocation of more resources is unable to shorten overdue days or bring down costs in the context of a small job number with adequate production resources. In sum, flexible integrated resource allocation and scheduling through IMODE enhance resource utilization and manufacturing efficiency in the face of dynamic production demands.

Key words: flexible resource allocation and scheduling, multi-objective optimization, adaptive differential evolution algorithm, fast non-dominated sorting, heuristic strategy

CLC Number: