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Reliability Modeling for Humidity Sensors Subject to Multiple Dependent Competing Failure Processes with Self-Recovery

机译:具有自恢复的多个相关竞争失败过程的湿度传感器可靠性建模

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摘要

Recent developments in humidity sensors have heightened the need for reliability. Seeing as many products such as humidity sensors experience multiple dependent competing failure processes (MDCFPs) with self-recovery, this paper proposes a new general reliability model. Previous research into MDCFPs has primarily focused on the processes of degradation and random shocks, which are appropriate for most products. However, the existing reliability models for MDCFPs cannot fully characterize the failure processes of products such as humidity sensors with significant self-recovery, leading to an underestimation of reliability. In this paper, the effect of self-recovery on degradation was analyzed using a conditional probability. A reliability model for soft failure with self-recovery was obtained. Then, combined with the model of hard failure due to random shocks, a general reliability model with self-recovery was established. Finally, reliability tests of the humidity sensors were presented to verify the proposed reliability model. Reliability modeling for products subject to MDCFPs with considering self-recovery can provide a better understanding of the mechanism of failure and offer an alternative method to predict the reliability of products.
机译:湿度传感器的最新发展对可靠性提出了更高的要求。鉴于诸如湿度传感器之类的许多产品都经历了具有自恢复功能的多个相关的竞争性故障过程(MDCFP),本文提出了一种新的通用可靠性模型。以前对MDCFP的研究主要集中在适用于大多数产品的降解和随机冲击的过程上。但是,现有的MDCFP可靠性模型无法完全表征具有重大自我恢复功能的产品(例如湿度传感器)的故障过程,从而导致可靠性低估。在本文中,使用条件概率分析了自我恢复对降解的影响。获得了具有自我恢复能力的软失效可靠性模型。然后,结合随机冲击导致的硬失效模型,建立了具有自我恢复能力的通用可靠性模型。最后,提出了湿度传感器的可靠性测试,以验证所提出的可靠性模型。考虑自恢复的受MDCFP约束的产品的可靠性建模可以提供对故障机理的更好理解,并提供预测产品可靠性的替代方法。

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