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Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (9): 2032-2039.doi: 10.3969/j.issn.1000-1093.2021.09.024

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Optimization of Vehicle Maintenance Process Scheduling under Limited Resources

TANG Runzhi1,2, BAN Liming2, QIAN Le2, LEI Zhengjun2, SONG Weixing2,3   

  1. (1.College of National Defense Engineering,Army Engineering University of PLA,Nanjing 210007,Jiangsu,China;2.Unit 32272 of PLA,Lanzhou 730000,Gansu,China;3.Department of Equipment Command and Management Engineering,Shijiazhuang Campus, Army Engineering University,Shijiazhuang 050003,Hebei,China)
  • Online:2021-10-20

Abstract: The tight schedules, a large number of tasks, and many emergencies will arise for the maintenance of vehicles during wartime. Vehicle maintenance scheduling has an important effect on the recovery of military combat effectiveness. The existing maintenance scheduling methods mainly focus on a single constraint condition for process optimization, which is difficult to meet the actual support requirements. A multi-objective optimization function that integrates multitiple work types and multi-personnel technical level elements is presented according to the size of actual maintenance team, and an improved non-dominated sorting genetic algorithm (NSGA-Ⅱ) based on elitist strategy is established by taking the single process man-hours, total man-hours, immediate predecessor activity, and total human resources as the constraint conditions. In the proposed algorithm, a binary tournament selection operator is added based on the traditional non-dominant elite strategy, and the crossover operator for the multi-objective function optimization is redesigned, and the double coding is used to calculate and solve the preemptive maintenance process scheduling mode. The simulation verification with actual maintenance cases shows that the proposed method is used to reduce the maintenance time and achieves the goal of optimizing the efficiency of human resource scheduling under the conditions of meeting the optimization of complex objectives in wartime.

Key words: vehiclemaintenance, limitedresource, one-timepreemption, processscheduling, activity-list-basedcoding, multi-objective, non-dominatedsortinggeneticalgorithm

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