基于模糊故障树直升机起落架液压系统的故障诊断方法研究  

Fault Diagnosis to Hydraulic System of Helicopter Landing-gear Based on Fuzzy Fault Tree

作　　者：李瑰贤[1] 于广滨[1] 马良[1] 

机构地区：[1]哈尔滨工业大学机电学院,哈尔滨150001

出　　处：《机床与液压》2007年第5期214-216,219,共4页Machine Tool & Hydraulics

摘　　要：起落架液压系统是飞机起落架系统中的重要组成部分,其可靠性的高低直接影响着飞机的安全。在对某型武装直升飞机起落架液压系统故障概率分析的基础上,将模糊数学和故障诊断方法相结合,建立了液压系统的模糊故障树。通过对其进行失效分析,推导出直升飞机起落架故障顶事件发生的模糊概率及其隶属函数分布,为起落架的维修和保养提供了理论依据。After analyzing fault probalility on various parts of hydraulic system of helicopter landing-gear and combming fuzzy theory with fault tree analysis, a fuzzy fault tree of the hydraulic system of helicopter landing-gear was built and its fault probability was analyzed. The distribution of the membership function and the fuzzy probability value of the top event when hydraulic system of helicopter landing-gear cannot work was derived. The theoretical foundation was supplied for maintaining the system.

关 键 词：起落架 液压系统 模糊故障树 故障诊 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]