基于分阶段Wiener-Einstein过程设备的实时可靠性评估  

Real-time reliability evaluation of equipment based on separated-phase Wiener-Einstein process

作　　者：王小林[1] 郭波[1] 程志君[1] 

机构地区：[1]国防科技大学信息系统与管理学院,湖南长沙410073

出　　处：《中南大学学报（自然科学版）》2012年第2期534-540,共7页Journal of Central South University:Science and Technology

基　　金：国家青年自然科学基金资助项目(60904002)

摘　　要：对分阶段退化情况下设备实时可靠性评估的方法进行研究。针对分阶段非单调的退化过程,提出分阶段Wiener-Einstein退化过程模型;然后,推导该模型下的可靠度函数,并给出对设备可靠度进行实时评估的方法;最后,基于该模型对液力耦合器的可靠性进行评估。研究结果表明:该退化模型能够很好描述液力耦合器分阶段的退化过程,且能够给出可信的可靠性评估结果。A method about real-time reliability evaluation for the equipment whose degradation process was separated into different phases was studied.Firstly,separated-phase Wiener-Einstein process was proposed to model equipment＇s degradation process which was obviously separated into different phases.Then the reliability function based on this degradation model and the updating method were presented.Finally,the method was applied to evaluate the real-time reliability of liquid coupling device（LCD）.The results show that the presented degradation model can depict LCD＇s separated-phase degradation process effectively,and the believable reliability evaluation is gained by the proposed method.

关 键 词：分阶段Wiener-Einstein过程 实时可靠性评估 液力耦合器 

分 类 号：TB114.3[理学—概率论与数理统计]