Prognostics of Failures in Embedded Planar Capacitors using Model-Based and Data-Driven Approaches
Prognostics of Failures in Embedded Planar Capacitors using Model-Based and Data-Driven Approaches
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DOI：
10.1177/1045389x11416024
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发表时间：
2011-08
影响因子：
2.7
通讯作者：
Mohammed A. Alam;M. Azarian;M. Osterman;M. Pecht
中科院分区：
文献类型：
--
作者：
Mohammed A. Alam;M. Azarian;M. Osterman;M. Pecht
本文介绍了基于模型和数据驱动的方法在嵌入式平面电容器故障预测中的应用。嵌入式平面电容器是一种薄层压板，既用作电源/接地层，又用作多层印刷线路板中的平行板电容器。随着电子电路中工作频率的增加和电源电压的降低，这些电容器变得越来越重要，因为它们可以实现电子电路的小型化以及改进的电气性能。在下一代电子电路中，嵌入式平面电容器在通信、汽车、军事、医疗和太空应用中至关重要。本研究中使用的电容器层压板由夹在铜层之间的环氧钛酸钡纳米复合电介质组成。在高温和电压老化条件下进行测试期间，对三个电气参数（电容、损耗因数和绝缘电阻）进行了现场监测。观察到的故障模式是绝缘电阻急剧下降和电容逐渐下降。本文提出了一种对与这些故障模式相关的故障时间进行建模的方法。此外，还研究了一种称为马哈拉诺比斯距离法的数据驱动技术，以尽早发现这些故障。
This paper presents the application of model-based and data-driven approaches for prognostics of failures in embedded planar capacitors. An embedded planar capacitor is a thin laminate that serves both as a power/ground plane and as a parallel plate capacitor in a multilayered printed wiring board. These capacitors have gained importance with an increase in the operating frequency and a decrease in the supply voltage in electronic circuits since they can enable miniaturization of electronic circuits as well as improved electrical performance. In next generation electronic circuits, embedded planar capacitors will be crucial in communication, automotive, military, medical, and space applications. The capacitor laminate used in this study consisted of an epoxy-barium titanate nanocomposite dielectric sandwiched between Cu layers. Three electrical parameters, capacitance, dissipation factor, and insulation resistance, were monitored in situ during testing under elevated temperature and voltage-aging conditions. The failure modes observed were a sharp drop in insulation resistance and a gradual decrease in capacitance. An approach to model the time-to-failure associated with these failure modes is presented in this paper. Further, a data-driven technique known as the Mahalanobis distance method is also investigated for early detection of these failures.