哈尔滨工程大学学报2025，Vol.46Issue(2)：309-319,11.DOI:10.11990/jheu.202209058
考虑RAMS的动车组部件预防性维修策略
Preventive maintenance strategy for electric multiple unit components considering RAMS
摘要
Abstract
A preventive maintenance strategy for rolling stock components considering a random access measure-ment system(RAMS)is proposed in this study to ensure the safe and reliable operation of electric multiple unit(EMU)components and achieve the safety and efficiency objectives of the maintenance department.This approach targets the EMU components that require replacement after reaching the fourth-level repair threshold.The strategy considers the impact of RAMS indicators on the component maintenance approach,implementing primary,ad-vanced,and minor repairs at failure.It introduces the service age decreasing factor and failure rate increasing fac-tor to capture the effects of different maintenance methods.Maintainability and safety indexes are quantified in terms of maintenance cost and time using the reliability threshold of the EMU component as the decision variable and the availability requirement as the constraint condition.Then,a multi-objective optimization model is estab-lished.The sensitivity of safety risk factors and maintainability loss factors to component reliability thresholds is an-alyzed,and the influence of various optimization objectives on maintenance strategy trends is investigated.The re-sults show that when the RAMS index is applied to the maintenance strategy of rolling stock components,the adop-tion of higher reliability thresholds can effectively control the number of minor component repairs,and the safety risk and maintenance loss factors exhibit significant effects on the strategy optimization results.Therefore,optimiza-tion effects become evident by adjusting the values of the objective function weighting factors.Theoretical support for the maintenance decision of rolling stock components can be provided by improving the economic efficiency of the preventive maintenance strategy using the RAMS index.关键词
预防性维修/动车组部件/可靠度、可用度、维修性、安全性/可靠度阈值/层次分析法/维修成本/维修时间/多目标优化Key words
preventive maintenance/electric multiple units component/reliability,availability,maintainability,and safety(RAMS)/reliability threshold/analytic hierarchy process(AHP)/maintenance cost/maintenance time/multi-objective optimization分类
交通工程引用本文复制引用
伊成山,王红..考虑RAMS的动车组部件预防性维修策略[J].哈尔滨工程大学学报,2025,46(2):309-319,11.基金项目
国家自然科学基金项目(72061022) （72061022）
甘肃省优秀研究生创新之星项目(2023CXZX-518). （2023CXZX-518）
