Research on the Cooperative Optimal Scheduling Model for Advanced Maintenance of Multiple EMUs

• 1、Institute of Computing Technologies, China Academy of Railway Sciences Group Co., Ltd

Abstract：In recent years, China's high-speed railway construction has made remarkable achievements. The number of EMUs is about to exceed 3000 standard units. Therefore, increasing number of EMUs is close to the advanced maintenance cycle, which brings great pressure to the existing advanced maintenance base. How to reasonably arrange the maintenance plan of EMU advanced maintenance base, arise the maintenance throughput, and improve the utilization rate of key equipment is of great significance to improve the operation efficiency of high-speed railway. In this paper, the parallel maintenance mode of multiple EMUs was adopted for the current advanced maintenance base. Under the dual-constraints of BOM of EMU parts to be overhauled and topology diagram of maintenance process, the optimization model was constructed to minimize the invalid maintenance debris time of key equipment and improve the maintenance throughput. In view of the non-linearity of the model, the topology map of multiple EMUs collaborative advanced repair was constructed first, based on which the maximum and minimum ant colony algorithm was designed to optimize the model, so as to obtain the optimal or sub optimal solution of the model.

Keywords： Emu Advanced Maintenance Transportation Organization Ant Colony Optimization Algorithm