列车车载雷达测速传感器性能退化监测及测速读数补偿方法  

Performance Degradation Monitoring and Speed Reading Compensation Method for On-Board Radar Speed Sensors of Trains

作　　者：陆陆[1] 徐正国[1] 王文海[1] 孙优贤[1] 

机构地区：[1]浙江大学工业控制技术国家重点实验室,浙江杭州310027

出　　处：《中国铁道科学》2011年第4期93-98,共6页China Railway Science

基　　金：国家自然科学基金资助项目(61004074;60736021);科技部支撑计划项目(2009BAG12A08);浙江省工业过程及生产装备先进控制创新团队项目(2009R50007);中央高校基本科研业务费专项资金资助项目(2009QNA5003;2010QNA5001);浙江大学优秀青年教师资助计划(紫金计划)项目

摘　　要：根据车载雷达测速传感器的工作原理和雷达天线夹角的变化规律,建立测速传感器性能退化的数学模型。利用建立的数学模型和轨旁应答器提供的列车运行距离,推导出列车运行距离与雷达天线夹角偏移量之间的关系式,实现了对测速传感器性能退化量的在线监测。提出根据在线监测结果对测速传感器测速读数补偿的方法,保证测速的精度。通过算例对在线监测方法和测速读数补偿方法进行仿真验证。结果表明,采用该方法能够正确地监测车载雷达测速传感器性能退化量并补偿测速读数,保证列车运行的安全。According to the working principle of the on-board radar speed sensors（RSSs） and the variation law of the radar antenna angle,the mathematical model for performance degradation of speed sensors is developed.Using the established performance degradation model and the train operation distance given by trackside balise,the mathematic relation between train operation distance and the antenna angle deviation is derived to realize the on-line monitoring of the RSSs performance degradation.Based on the on-line monitoring results,the speed reading compensation approach for speed sensors is also proposed to guarantee the accuracy of speed measurement results.A numerical example is adopted to simulate and verify the proposed on-line performance degradation monitoring approach and the speed reading compensation method.The result shows that these approaches can correctly monitor the performance degradation of the on-board RSSs and compensate the speed reading,which can guarantee the safe operation of trains.

关 键 词：车载雷达 测速传感器 性能退化 在线监测 列车运行控制系统 

分 类 号：U284.481[交通运输工程—交通信息工程及控制]