摘要
航天继电器作为一种密封的电器元件,其贮存可靠性对于导弹等武器装备至关重要。如何测试评价航天继电器在贮存过程中性能及可靠性的衰退,是继电器用户和厂家非常关心的问题。利用开发的实验系统对某型号航天继电器进行了贮存加速实验,得到了吸合时间的变化规律。分析并验证了贮存过程中吸合时间变化的主要原因是簧片应力松弛所导致的反力变化。通过仿真与实验均证实了吸合时间与簧片初力存在近似的线性关系,进而提出可采用吸合时间来表征簧片的应力松弛退化特性。建立了高温条件下继电器吸合时间的贮存退化模型,为进一步研究继电器贮存可靠性及贮存寿命预测奠定了基础。
As a hermetically sealed electrical component, the storage reliability of aerospace electromagnetic relay （EMR） plays an important role in weapons, such as missiles. How to test and evaluate the performance degradation and storage reliability of aerospace EMR are widely concerned by both relay consumers and manufactures. Through the storage accelerated degradation testing of a certain type of aerospace EMR based on a self designed testing system, the degradation data of pick-up time were obtained and analyzed. According to the analysis of degradation mechanism of pick-up time in long-term storage, reed force degradation caused by stress relaxation was verified to be the main cause. The results of both simulation and testing show that pick-up time is approximate linear relation to reed initial force. Then pick-up time was chosen as the indication of reed stress relaxation degradation. Meanwhile, the pick-up time degradation model under high temperature was built, and it could provide the basis for latter aerospace EMR storage reliability assessment and life prediction.
作者
叶雪荣
林义刚
黄晓毅
翟国富
Ye Xuerong Lin Yigang Huang Xiaoyi Zhai Guofu(School of Electrical Engineering ＆ Automation Harbin Institute of Technology Harbin 150001 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2017年第11期173-179,共7页
Transactions of China Electrotechnical Society
基金
国家自然科学基金项目(51377029)
火箭军武器装备科研项目(二炮2014年002号)资助
关键词
航天继电器
贮存
吸合时间
应力松弛
Aerospace electromagnetic relay, storage, pick-up time, stress relaxation
