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1.中国工程物理研究院 流体物理研究所,绵阳 621900
2.西南交通大学 数学学院统计系,成都 611756
3.西南科技大学 信息工程学院,绵阳 621010
4.西南科技大学 复杂环境装备可靠性研究中心,绵阳 621010
杨童博,女,1999年生,河南开封人,硕士研究生;主要研究方向为可靠性统计;E-mail:15237226155@163.com。
收稿日期:2023-08-19,
修回日期:2023-09-28,
纸质出版日期:2025-04-15
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张也平, 杨童博, 李紫薇. 基于多参数性能退化竞争失效的光电探测器储存寿命评估[J]. 机械强度,2025,47(4):20-26.
ZHANG Yeping,YANG Tongbo,LI Ziwei. Storage life evaluation of photodetector based on multi-parameter performance degradation and competitive failure[J]. Journal of Mechanical Strength,2025,47(4):20-26.
张也平, 杨童博, 李紫薇. 基于多参数性能退化竞争失效的光电探测器储存寿命评估[J]. 机械强度,2025,47(4):20-26. DOI: DOI:10.16579/j.issn.1001.9669.2025.04.003.
ZHANG Yeping,YANG Tongbo,LI Ziwei. Storage life evaluation of photodetector based on multi-parameter performance degradation and competitive failure[J]. Journal of Mechanical Strength,2025,47(4):20-26. DOI: DOI:10.16579/j.issn.1001.9669.2025.04.003.
针对光电探测器的储存寿命评估问题,综合考虑样品关键性能参数有无变坏或者向好的趋势情况,提出了一种基于蒙特卡洛法的多参数竞争失效储存寿命评估新方法。首先,通过性能退化建模选择单一参数的最优退化模型,从而对于退化趋势递增的样品根据失效阈值计算其伪寿命,对于退化趋势递减的样品将其伪寿命看作右删失数据;然后,根据伪寿命数据结合最大期望(Expectation Maximization
EM)算法选择单一性能参数的最优分布;最后,通过蒙特卡洛采样法进行多参数的竞争失效评估。以光电探测器储存案例为实例,验证了该方法的可行性。
Aiming at the storage life evaluation of photodetectors
a new evaluation method for multi-parameter competitive failure storage life assessment based on Monte-Carlo method was proposed. This method comprehensively considered whether the key performance parameters of the sample have deteriorated or improved trend. Firstly
the optimal degradation model with a single parameter was selected by performance degradation modeling
so that the pseudo-life of the sample with increasing degradation trend was calculated according to the failure threshold
and the pseudo-life was regarded as the right-censored data for the sample with decreasing degradation trend. Furthermore
the optimal distribution of a single performance parameter was selected based on the pseudo-life data combined with the expectation maximization(EM) algorithm
and then the competitive failure evaluation of multi-parameters was carried out by Monte-Carlo sampling method. According to the case analysis of the photodetector storage
the feasibility of this method was verified.
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