关键词: 客流分布, 动车组部件, 维护策略, 加速失效模型

Abstract: To explore the economics of Electric Multiple Units (EMU) component maintenance strategies under the influence of uneven passenger flow distribution,the polynomial fitting method was introduced to segment quantify wave passenger flow,and the cost function of component differential shutdown loss under the influence of uneven passenger flow distribution was also proposed.Based on the accelerated failure time model,the dynamic adjustment method of component maintenance strategy with reliability as constraint was established.Through the sensitivity analysis of the delayed maintenance reliability threshold of components,the most economical maintenance strategy adjustment method was determined.The research results showed that the maintenance model considering passenger flow distribution could more accurately characterize the reliability degradation process of components,the dynamic adjustment of maintenance activities of components during the peak passenger flow period could effectively reduce downtime losses.It could be used for maintenance under the influence of uneven passenger flow distribution plan for reference.

Key words: passenger flow distribution, electric multiple units component, maintenance strategy, accelerated failure time model