CAJ | 학술논문

利用加速寿命试验对产品设备进行剩余寿命评估正在成为研究的热点,如何提高其评估的精度是其中一个非常重要的问题.针对目前加速寿命试验统计方法存在的将试验样品看作新品,把加速试验外推后的应力环境等同于实际工作环境,忽视现场数据等问题,从模型和信息量两方面着手提高寿命评估精度.通过考虑产品初始失效和环境差异的影响,建立更为准确的寿命模型.对加速寿命试验的试验数据和现场数据进行融合统计分析,使得评估数据中蕴含更为丰富的多源寿命信息,由此得到置信度更高的寿命评估结果.仿真对比结果表明,由于模型准确度的提高和统计信息量的增加,所提出的方法评估精度更高,效果更好.
이용가속수명시험대산품설비진행잉여수명평고정재성위연구적열점,여하제고기평고적정도시기중일개비상중요적문제.침대목전가속수명시험통계방법존재적장시험양품간작신품,파가속시험외추후적응력배경등동우실제공작배경,홀시현장수거등문제,종모형화신식량량방면착수제고수명평고정도.통과고필산품초시실효화배경차이적영향,건립경위준학적수명모형.대가속수명시험적시험수거화현장수거진행융합통계분석,사득평고수거중온함경위봉부적다원수명신식,유차득도치신도경고적수명평고결과.방진대비결과표명,유우모형준학도적제고화통계신식량적증가,소제출적방법평고정도경고,효과경호.
Remaining life evaluation of products based on accelerated life testing (ALT) is becoming a hot spot of research, and how to improve the precision of evaluation is one of the most important issues. Related tasks on remaining life evaluation based on ALT, however, exist some problems, such as regarding the samples as new products, taking the extrapolated condition from ALT as the real operated condition, and neglecting field data. In view of these problems, a more accurate life model is built by taking the impact of initial failure and environment difference into account. The model is statistically analyzed by fusing ALT testing data and field data, so as to increase much more multisource life information within evaluated data. Simulation shows that, the result of remaining life evaluation based on ALT becomes more precise due to improving life model and increasing information.