考虑载荷和共因失效的液压系统可靠性评估

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中图分类号：V245.1 文献标志码：A 文章编号：2095-2945(2025)30-0009-04

Abstract:Thehydraulicsystemhastheadvantagesofsmothoperation,convenientoperationandcontrol,andhigh power density.Itiswidelyusedinlargeandmedium-sizedhelicopterstoprovidedrivingforcefortheircontrolsystems.Itsreliable operationiscrucialtoensuringhelicoptercontrolcapabilies.Residualdesignisusuallyusedtoensurethehdraulicsystem's missionreliability.Thispapertakestheredundanthydraulicsystemastheresearchobject,considersthecharacteristicsof system componentsthatarefilure-relatedandcomplexandchangeablefailurelaws,usesaproportionalriskmodeltocharacterizethe impactofloadoncomponentfailurerate，andestablishesareliabiltymodelofacommoncausefailuresystembasedon Bayesiannetworks;onthisbasis,thestaticBayesiannetworkisexpandedtoadynamicBayesiannetworkmodelincludingtime factors to evaluate the reliability of the system.

Keywords:redundancy；hydraulicsystem;proportional riskmodel;commoncause failure;reliabilityassessment

当前大中型直升机都依靠液压系统为其操纵系统提供驱动力。（剩余8021字）