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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2011, Vol. 32 ›› Issue (12): 2293.

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Optimization Model and Algorithm for Aircraft Scheduling Problem Based on Cooperative Multi-task Assignment

ZHOU Kun, XIA Hongshan   

  1. College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2011-05-16 Revised:2011-06-14 Online:2011-12-25 Published:2011-12-08

Abstract:

The conflict between safety and cost is an outstanding problem during flight operation, i.e., aircraft must accomplish maintenance tasks to establish a safe environment, and then the utilization of aircraft should be improved to reduce operational cost. In view of this, the aircraft scheduling problem based on cooperative multi-task assignment is studied. The approach applies branch-and-price algorithm to the cost optimization model with maintenance constraints, and mathematical model of daily utilization ratio is established. According to definitions of maintenance point and virtual aircraft point, the algorithm formulates assigned flights and maintenance tasks as routes. After several iterations of solving a restricted master problem containing a subset of routes and a pricing problem generating new routes with negative reduced cost, an optimal solution to the linear programming relaxation problem is obtained. To obtain the integer solution, a dedicated branching scheme based on fail first principle is proposed, and the branching decision is imposed on route variables. Then the aircraft scheduling is formed. Simulation results show that the proposed approach can solve the aircraft scheduling problem effectively.

Key words: air traffic control, scheduling, multi-task assignment, branch-and-price algorithm, column generation, constraint satisfaction

CLC Number: