基于竞争失效模型的金属化膜脉冲电容器产品可靠性研究

Reliability Analysis of Metallized-film Pulse Capacitor under Competing Failure Modes

在确定产品性能退化量分布模型的基础上,给出了突发型与退化型失效的竞争失效的一般模型,该模型考虑了突发失效率与退化量的相关性.通过分析金属化膜脉冲电容器的退化失效机理,利用该竞争失效模型,对金属化膜脉冲电容器进行了可靠性分析,确定了该型电容器的可靠度函数.

Competing risk involving multiple failures are becoming increasingly common and important in practice. The paper investigates the modeling of competing risk problems involving both traumatic and degradation failures. Dependence of traumatic failure intensities on the degradation level are included into the models. Then, by analyzing degradation mechanism of metallized-film capacitor, this paper presents a life distribution model of metallized-film pulse capacitor using the models.