摘要
利用模糊故障树理论对重型卧式车床主轴箱系统可靠性进行分析。以某重型卧式车床主轴箱为例,通过建立主轴箱故障树,找出故障树顶事件的最小割集;利用模糊理论合理客观地得到主轴箱的故障概率区间;通过对底事件模糊概率重要度的计算,得到顶事件的薄弱环节以及关键事件,从而为主轴箱可靠性设计和可靠性增长指明了方向。结果表明:"润滑不良"为影响主轴箱系统不能正常工作的关键事件。
With the use of fuzzy fault tree, the reliability of headstock system is analyzed. Take a headstock for example, minimum cut sets of the headstock are found through building the fault tree and probability interval are derived and the weak links and critical event of the top event are gained through the analysis of fuzzy reliability importance of the bottom events which offer useful reference for further reliability design and reliability growth. The results indicate that bad lubrication is the critical event when the headstock is in abnormal operating condition.
出处
《现代制造工程》
CSCD
北大核心
2011年第11期86-89,共4页
Modern Manufacturing Engineering
基金
国家科技重大专项基金资助项目(2009ZX04014)
关键词
主轴箱
模糊故障树
模糊概率重要度
headstock
fuzzy fault tree
fuzzy reliability importance
作者简介
杨培林，博士，副教授，硕士研究生导师。近年来主要从事机械设计、动力学、可靠性等方面的研究工作。E—mail：plyang@mail．xjm．edu．cn．
赵柱，通讯作者，硕士研究生，研究方向为机械系统的可靠性。
