密封电磁继电器失效机理一致性判别方法研究  

Study on Failure Mechanism Consistency Identification of Hermetically Sealed Electromagnetic Relay

作　　者：杨昕宇 由佳欣[1] 付饶[1] 陈乐羽 曾宇涵 Xinyu;YOU Jiaxin;FU Rao;CHEN Leyu;ZENG Yuhan(Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《电器与能效管理技术》2023年第11期1-7,34,共8页Electrical & Energy Management Technology

基　　金：国家自然科学基金项目(NSFC52177134)。

摘　　要：航空航天用密封电磁继电器对长期带载可靠性要求较高,通常使用加速退化试验预测其可靠寿命。多应力的加速退化试验中,要求密封电磁继电器失效机理一致,否则得出的寿命预测将有较大偏差。因此加速退化试验失效机理一致性研究,对提高密封电磁继电器可靠寿命预测的准确性具有重要意义。首先基于似然比检测原理,提出一致性判别准则;进而对某典型密封电磁继电器设计加速退化试验,分析试验数据,运用所提准则对其进行一致性检验;得出一致性结论后,实施破坏性物理试验分析永磁体和簧片的退化,对结论进行验证,得到所提一致性判别准则的有效性。Hermetically sealed electromagnetic relay(HSER)used in aviation and aerospace have high requirements for long-term on-load reliability.Accelerated degradation test is usually used to predict reliable life.In the multi-stress accelerated degradation test,the failure mechanism of HSER must be consistent,otherwise the product life prediction will have a large deviation.Therefore,the study on the failure mechanism consistency of accelerated degradation test is of great significance to improve the accuracy of reliable life prediction of HSER.Firstly,based on the principle of likelihood ratio detection,a consistency criterion is proposed to design an accelerated degradation test for a typical HSER.The test data is analyzed,and the consistency is checked by the criterion.After obtaining a consistency conclusion,the destructive physical experiments are carried out to analyze the degradation of the permanent magnet and spring.The effectiveness of the proposed criterion is verified.

关 键 词：密封电磁继电器 失效机理一致性 似然比检验 破坏性物理试验 

分 类 号：TM581[电气工程—电器]