摘要
采用编码里程计及多普勒雷达进行组合测速,描述了列车组合测速平台的主要结构,提出了利用卡尔曼滤波残差字2来检测列车空转/打滑故障的方法。采用故障树分析法对列车组合测速系统进行了故障分析,并对其故障树进行重构,根据实际参数对组合测速系统危险侧失效率进行了计算。计算结果证明,利用多普勒雷达补偿列车空转/打滑,列车组合测速系统的安全完整性符合SIL 4等级。
Coded odometer and Doppler radar are used tomeasure the train speed,and the main structure of the trainspeed measurement platform is described.Then,Kalman filteringresidualsχ2is proposed to detect train sliding/slippingphenomenon,FTA method is used to conduct the failure analysisof the proposed system.The fault tree of the integratedsystem is reconstructed and the failure rate of the dangerousside is calculated according to the actual parameters.The resultsverify that safety integrity of train speed measurement fitsin with SIL4security level by using Doppler radar to compensatethe errors caused by train idling and slipping.
作者
崔科
董德存
CUI Ke;DONG Decun(School of Transportation Engineering,Tongji University,201804,Shanghai,China)
出处
《城市轨道交通研究》
北大核心
2017年第7期56-59,64,共5页
Urban Mass Transit
关键词
轨道交通
列车组合测速
安全完整性分析
故障树分析法
rail transit
integrated train speed measurement
safety integrity analysis
fault tree analysis(FTA)
