CRH2及CRH380A系列动车组速度传感器可靠性评估研究  

Reliability Evaluation of Speed Sensor for CRH2 and CRH380A Series EMU

作　　者：梁爽 贾步超 孙卫平 吴超云 LIANG Shuang;JIA Bu-chao;SUN Wei-ping;WU Chao-yun(CRRC Qingdao Sifang Co.,Ltd.,Qingdao,266111,China;Guangzhou Grg Metrology and Test Co.,Ltd.,Beijing 100176,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东青岛266111 [2]广电计量检测(北京)有限公司,北京100176

出　　处：《装备环境工程》2022年第3期106-111,共6页Equipment Environmental Engineering

摘　　要：提出了一种动车组列车速度传感器的寿命研究方法,通过对不同运行里程的速度传感器进行全寿命周期的环境影响分析,设计三综合性能退化寿命试验,缩短试验周期,并根据试验过程中测试参数的退化趋势,确定其寿命主要特征参数为线圈电阻。分析了不同里程速度传感器的特征参数试验结果,采用数据拟合及寿命里程等效估算的方法,预测速度传感器的寿命。结果表明,随着运行里程的增加,相同的试验时间,线圈电阻逐渐变大,绝缘电阻逐渐变小。经估算,三综合试验时间等效运行里程为每小时相当于0.3278×10^(4)km。动车组速度传感器在正常运行条件下,其平均故障间隔时间(MTBF)可达到1978×10^(4)km的里程。此外,通过本项目研究也为快速评价同类型速度传感器寿命提供了参考方法。The life research method of the speed sensor of the EMU was proposed in this paper. Through the environmental impact analysis of the whole life cycle of speed sensors with different operating mileage, three comprehensive tests for performance degradation life were designed to shorten the test cycle, and according to the degradation trend of test parameters during the test, the main characteristic parameter of the life was determined as coil resistance. The life of speed sensors was predicted through analyzing the test results of characteristic parameters of different speed sensors and using a method of data fitting and life-mileage equivalent estimation. The result shows that with the increase of operating mileage, the coil resistance gradually increases and insulation resistance gradually decreases at the same test time. It is estimated that the equivalent operating mileage of the three comprehensive test time is equivalent to 32.78 thousand kilometers per hour. The MTBF of the EMU speed sensor reaches 19.78 million kilometers in normal operation conditions. The research of this project also provides a method basis for rapid evaluation of speed sensor life.

关 键 词：速度传感器 动车组 可靠性 寿命 

分 类 号：U266[机械工程—车辆工程]