Research on Multi Maintenance Stations Scheduling Method for Passenger Elevators with Considering Priority

Aiming at the problem that the current passenger elevator maintenance scheduling mainly relies on manual work and cannot meet the large-scale maintenance scheduling which needs to consider the priority, a multi-optimization objective and multi-maintenance station maintenance scheduling method considering the priority of maintenance tasks was proposed. Firstly, the maintenance scheduling characteristics of multiple maintenance stations were analyzed, and the task of multi-maintenance station scheduling was decomposed into a single maintenance station maintenance scheduling model using K-means ++ algorithm. Then, an improved NSGA-II algorithm for single maintenance station scheduling was proposed to consider the priority of maintenance tasks, and a double-strand coding method was designed. At the same time, the crossover operator and mutation operator are improved, and finally the case analysis is carried out. The analysis results show that the proposed method can quickly realize multi-station maintenance scheduling considering priority, and the number of maintenance personnel required by different maintenance stations is different. The proposed method can provide reference for the formulation of maintenance route and the determination of maintenance personnel.