Modeling of reliability and performance assessment of a dissimilar redundancy actuation system with failure monitoring

查看全文 作　　者：Wang [1]Shaoping;Cui [1]Xiaoyu;Shi [1]Jian;Mileta [2]M.Tomovic;Jiao [1]Zongxia

机构地区：[1]School of Automation Science and Electrical Engineering,Beihang University;[2]College of Engineering and Technology,Old Dominion University

出　　处：《Chinese Journal of Aeronautics》索引2016年第29卷第3期,共15页

基　　金：supported by the National Basic Research and Development Program of China(No.2014CB046402);the National Natural Science Foundation of China(No.51175014);‘‘111' Program of China 摘　　要：Actuation system is a vital system in an aircraft,providing the force necessary to move flight control surfaces.The system has a significant influence on the overall aircraft performance and its safety.In order to further increase already high reliability and safety,Airbus has implemented a dissimilar redundancy actuation system(DRAS) in its aircraft.The DRAS consists of a hydraulic actuation system(HAS) and an electro-hydrostatic actuation system(EHAS),in which the HAS utilizes a hydraulic source(HS) to move the control surface and the EHAS utilizes an electrical supply(ES) to provide the motion force.This paper focuses on the performance degradation processes and fault monitoring strategies of the DRAS,establishes its reliability model based on the generalized stochastic Petri nets(GSPN),and carries out a reliability assessment considering the fault monitoring coverage rate and the false alarm rate.The results indicate that the proposed reliability model of the DRAS,considering the fault monitoring,can express its fault logical relation and redundancy degradation process and identify potential safety hazards. 关键词：液压驱动系统性能评估模型可靠性模型故障监测冗余广义随机PETRI网异种作动系统

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Modeling of reliability and performance assessment of a dissimilar redundancy actuation system with failure monitoring

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