电液伺服机构故障树分析  

Fault tree analysis of electro-hydraulic servo mechanism

作　　者：陈兴根[1] 潘骏[1] 陈文华[1,2] 吴友义[1] 陈泽宗[1] 蔡有成[1] 

机构地区：[1]浙江理工大学机械与自动控制学院,浙江杭州310018 [2]浙江大学机械设计研究所,浙江杭州310027

出　　处：《机电工程》2009年第4期25-27,35,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(50745040);浙江省自然科学基金资助项目(Y1080762)

摘　　要：为提高某型号装备中电液伺服机构的可靠性水平,通过分析该电液伺服机构的组成和失效情况,以电液伺服机构不能正常工作为顶事件建立了故障树,并对故障树进行了分析,得出了故障树的最小割集;给出了影响电液伺服机构正常工作的各失效因素及其逻辑关系;同时,依据对结构函数的简化,建立了与工程实际较为接近的电液伺服机构可靠性模型。研究结果表明,该模型为对电液伺服机构进行可靠性试验、评价和设计提供了依据。Aiming at improving the reliability level of a certain equipment of electro-hydraulic servo mechanism, through the analysis of composition and failure condition, the fault tree of electro-hydraulic servo mechanism was established considering the failure as the top event. The qualitative analysis of the fault tree, the minimal cut sets were gotten. Each failure factor and their logical relation out affecting the normal work of the electro-hydraulic servo mechanism were given. Judging by the sitnplification to structure function, the electro-hydraulic servo mechanism reliability model was built. Research result indicates that a basis is provided for carrying out a reliability test on electro-hydraulic servo mechanism, estimating and designing.

关 键 词：电液伺服机构 故障树 可靠性 

分 类 号：TJ765.2[兵器科学与技术—武器系统与运用工程] TH137.7[机械工程—机械制造及自动化]