Reliability modeling of the bivariate deteriorating product with both monotonic and non-monotonic degradation paths  

作　　者：SUN Fuqiang GUO Hongxuan LIU Jingcheng 

机构地区：[1]School of Reliability and Systems Engineering,Beihang University,Beijing 100191,China [2]Science and Technology on Reliability and Environmental Engineering Laboratory,Beihang University,Beijing 100191,China [3]Wuhan Maritime Communication Research Institute,Wuhan 430079,China

出　　处：《Journal of Systems Engineering and Electronics》2021年第4期971-983,共13页系统工程与电子技术（英文版）

基　　金：supported by the National Key R&D Program of China(2018YFB0104504).

摘　　要：Fiber optical gyroscope(FOG)is a highly reliable navigation element,and the degradation trajectories of its two accuracy indexes are monotonic and non-monotonic respectively.In this paper,a flexible accelerated degradation testing(ADT)model is used for analyzing the bivariate dependent degradation process of FOG.The time-varying copulas are employed to consider the dynamic dependency structure between two marginal degradation processes as the Wiener process and the inverse Gaussian process.The statistical inference is implemented by utilizing an inference function for the margins(IFM)approach.It is demonstrated that the proposed method is powerful in modeling the joint distribution with various margins.

关 键 词：fiber optical gyroscope bivariate accelerated degradation testing Wiener process inverse Gaussian process time-varying copulas DEPENDENCE 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]