地铁列车紧急制动电路安全性分析及其设计优化(上)  

Safety Analysis and Design Optimization of Emergency Brake Circuit of Metro EMU(Part 1 of 2)

作　　者：王冰洁 鞠丽丽 薛淑胜 WANG Bingjie;JU Lili;XUE Shusheng

机构地区：[1]中车南京浦镇车辆有限公司,江苏南京213100

出　　处：《铁道技术监督》2024年第7期52-56,共5页Railway Quality Control

摘　　要：为满足地铁列车紧急制动安全要求,依据EN 50126-1:2017《轨道交通可靠性、可用性、可维护性和安全性(RAMS)规范及示例第1部分:通用RAMS过程》规定的风险接收准则,确定紧急制动电路可容忍功能失效率。基于紧急制动电路既有方案构建故障树,并计算紧急制动电路的功能失效率,分析紧急制动电路既有方案不满足安全目标的原因,从紧急制动触发条件和产品失效检测方式等多个方面,优化紧急制动电路既有方案。经计算可知,优化后的紧急制动电路安全性得到有效提升,满足安全要求。To meet the safety requirements for emergency braking of Metro EMU,the tolerable functional failure rate of the emergency braking circuit is determined in accordance with the risk acceptance criteria specified in EN 50126-1:2017 Railway applications⁃The specification and demonstration of reliability,availability,maintainability and safety(RAMS)-Part 1:Generic RAMS process.Based on the existing emergency braking circuit scheme,a fault tree is constructed and the functional failure rate of the emergency braking circuit is calculated.The reasons that the existing scheme does not meet safety goals are analyzed.From multiple aspects such as emergency braking triggering conditions and product failure detection methods,the existing emergency braking circuit scheme is optimized.According to calculations,the safety of the optimized emergency braking circuit has been effectively improved,safety requirements are met.

关 键 词：地铁动车组 紧急制动电路 安全性 故障树 

分 类 号：U266.203.5[机械工程—车辆工程]