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首页> 《中国测试》期刊 >本期导读>CRH380B系列动车组继电器寿命评估技术研究

CRH380B系列动车组继电器寿命评估技术研究

244    2020-09-17

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作者:李佳欣1, 刘云1, 裴春兴2, 李娜2

作者单位:1. 北京交通大学电子信息工程学院,北京 100044;
2. 中车唐山机车车辆有限公司技术研究中心,河北 唐山 063035


关键词:继电器;Fick扩散理论;Larson-Miller分析法;剩余寿命


摘要:

动车组继电器是列车的主要元器件之一,其寿命的评估对动车组的安全正常运行至关重要。利用Fick扩散理论和Larson-Miller分析法建立继电器的接触电阻和吸合时间性能退化模型。利用试验台对动车组未安装使用、已运营1 200 000 km和故障3种类型的继电器进行可靠性寿命试验,根据实验数据并利用Matlab中最小二乘法非线性拟合对退化模型中的未知参数进行估计。根据SSE之和最小原则选取继电器特性参数的最优退化模型,根据特性参数的失效阈值得到不同试验温度下的寿命特征量,并利用该寿命特征量,对阿伦尼斯模型中的未知量进行参数估计,实现继电器在常温下的可靠性寿命评估。最后通过试验验证该方法的正确性。研究结果为CRH380B型动车组继电器的安全运用和维护维修提供依据。


Research on relay life assessment technology for CRH380B EMU
LI Jiaxin1, LIU Yun1, PEI Chunxing2, LI Na2
1. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044,China;
2. Technology Research Center, CRRC Tangshan Co., Ltd., Tangshan 063035, China
Abstract: The realy of EMU is one of the main apparatus, and the realy life assessment is of utmost importance to safe and normal preration of EMU. The Fick diffusion theory and Larson-Miller analysis method are used to establish the contact resistance and absorption time performance degradation model of the relay. The reliability life test was carried out on the test rigs for three types of relays that were not installed and used by the EMU, and that had operated 1.2 million kilometers and faults. According to the experimental data, the least squares nonlinear fitting in Matlab was used to fit the unknown parameters in the degradation model. An estimate was made. According to the minimum principle of SSE sum, the optimal degradation model of the relay characteristic parameters is selected, and the life characteristic quantity at different test temperatures is obtained according to the failure threshold of the characteristic parameters. And using the life feature quantity, the unknown parameters of the Arrhenius model are estimated, and the reliability life evaluation of the relay at normal temperature is realized.Finally, the method is verified to be correct in the experiment. The research results provide basis for safe utilization, maintenance and repair of the high voltage apparatus system of CRH380B EMU.
Keywords: relay;Fick diffusion theory;Larson-Miller analysis method;remaining life
2020, 46(8):82-89,118  收稿日期: 2019-09-07;收到修改稿日期: 2019-11-19
基金项目: 国家重点研发计划项目(2016YFF0203400)
作者简介: 李佳欣(1993-),女,河北唐山市人,硕士研究生,专业方向为轨道车辆新技术与共性技术研究
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