电液伺服机构故障树分析*

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 日期：2009-04-21/span> 浏览：3939 查看PDF文档

电液伺服机构故障树分析*

陈兴根1,潘骏1,陈文华1，2,吴友义1,陈泽宗1,蔡有成1
（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）

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。
关键词：电液伺服机构；故障树；可靠性
中图分类号：TJ765.2;TH137.7文献标识码：A文章编号：1001-4551(2009)04-0025-04

Fault tree analysis of electrohydraulic servo mechanism
CHEN Xing-gen1, PAN Jun1, CHEN Wen-hua1,2, WU You-yi1, CHEN Ze-zong1, CAI You-cheng1
(1. Faculty of Mechanical Engineering and Automatic Control, Zhejiang Sci-Tech University, Hangzhou 310018, China;
2. Institute of Mechanical Design, Zhejiang University, Hangzhou 310027, China)
Abstract: Aiming at improving the reliability level of a certain equipment of electrohydraulic servo mechanism, through the analysis of composition and failure condition, the fault tree of electrohydraulic 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 electrohydraulic servo mechanism were given. Judging by the simplification to structure function, the electrohydraulic servo mechanism reliability model was built. Research result indicates that a basis is provided for carrying out a reliability test on electrohydraulic servo mechanism, estimating and designing.
Key words: electrohydraulic servo mechanism; fault tree; reliability