摘要
微粒碰撞噪声检测试验是航天继电器出厂前必做的筛选试验,冲击是微粒碰撞噪声检测试验中的重要环节。为找出影响冲击加速度峰值和脉冲持续时间的关键因素,研究冲击试验条件对多余物微粒的激活效果,增加检测的成功率。本文建立了冲击过程的数学模型,分析系统参数对冲击加速度的影响;基于电像力理论推导最小冲击加速度与多余物微粒物特征参数的关系;将"损伤等效原则"用于确定冲击试验条件,给出了等效冲击条件表,并进行了相关实验验证。实验结果表明:选择不同冲击条件,可以实现对不同大小的多余物微粒进行有效的激活。
Particle impact noise detection（PIND） is the standard for detecting remainders in aerospace relay and it is also an obligatory screening test after manufacture of the relays.Impact is an important process in particle impact noise detection.To identify the key factors of the peak acceleration and pulse duration of the impact.Investigate the activate effects of impact conditions for reminder particles,increase the success rate of testing.This paper establishes the mathematical model of impact,and then researches the influence of system parameters on the impact acceleration.The relationship between minimum impact acceleration and characteristic parameters of the reminder particles is investigated based on electricity image force theory;an equivalent impact condition table is given in this paper based on ＂the damage equivalent principle＂;and corresponding experiments are carried on.The experimental results show that to choose different impact conditions can activate different size of reminder particles effectively.
出处
《电工技术学报》
EI
CSCD
北大核心
2011年第1期75-80,85,共7页
Transactions of China Electrotechnical Society
基金
国防科工委工业技术基础科研基金(FEBG27100001)
总装军用电子元器件型谱序列科研基金(QT070920503XE0300)资助项目
关键词
航天继电器
多余物
微粒噪声碰撞检测
冲击
Aerospace relay
reminders
particle impact noise detection
impact
