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A mixed-effects model of two-phase degradation process for reliability assessment and RUL prediction

机译:可靠性评估与ruL预测的两相降解过程的混合效应模型

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摘要

Degradation modeling plays a critical role in reliability assessment and remaining useful life (RUL) prediction of products. In some practical applications, the degradation processes of products consist of two distinct phases, and hence traditional models are inadequate to characterize the degradation processes. To overcome this problem, we propose a mixed-effects model based on the Wiener process to capture the two-phase degradation pattern. More importantly, this novel model accommodates two significant aspects: phase correlation and unit heterogeneity. Using the new model, we develop an offline reliability assessment method using run-to-failure data from a population of products, and an online RUL prediction method for an operational product. Finally, a simulation study and a real case of batteries demonstrate the superiority of the proposed model and method.
机译:退化建模在可靠性评估中起着关键作用,并剩下产品的使用寿命(RUL)预测。在一些实际应用中,产品的降解过程由两个不同的阶段组成,因此传统模型不足以表征降解过程。为了克服这个问题,我们提出了一种基于维纳过程的混合效应模型来捕获两相降级模式。更重要的是,该新型模型可容纳两个重要方面:相位相关和单位异质性。使用新模型,我们使用来自产品群的失败数据以及用于操作产品的在线RUL预测方法,开发了离线可靠性评估方法。最后,模拟研究和实际情况的电池展示了所提出的模型和方法的优越性。

著录项

  • 来源
    《Microelectronics & Reliability》 |2020年第4期|113622.1-113622.12|共12页
  • 作者单位

    Beihang Univ Sch Reliabil & Syst Engn Beijing 100191 Peoples R China;

    Beihang Univ Sch Reliabil & Syst Engn Beijing 100191 Peoples R China|Beihang Univ Key Lab Reliabil & Environm Engn Technol Beijing 100191 Peoples R China;

    Beihang Univ Sch Reliabil & Syst Engn Beijing 100191 Peoples R China|Beihang Univ Key Lab Reliabil & Environm Engn Technol Beijing 100191 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Mixed-effects model; Wiener process; Two-phase degradation; Reliability assessment; RUL prediction;

    机译:混合效果模型;维纳过程;两相降级;可靠性评估;rul预测;

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