地铁列车紧急制动电路安全性分析及其设计优化(下)
王冰洁 1鞠丽丽 1薛淑胜1
作者信息
- 1. 中车南京浦镇车辆有限公司,江苏 南京 213100
- 折叠
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.
Abstract
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 con-structed 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 calcu-lations,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Key words
Metro EMU/Emergency Brakeing Circuit/Safety/Fault Tree引用本文复制引用
出版年
2024
NETL
NSTL
万方数据