定时截尾试验下滚动轴承的可靠性评估方法  

Reliability Evaluation Method for Rolling Bearings Under Fixed Time Truncated Test

作　　者：李军星 许雅杰 邱明[1] 吕锋[1] 张勇波[4] LI Junxing;XU Yajie;QIU Ming;LYU Feng;ZHANG Yongbo(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China;Advanced Machinery and Equipment Manufacturing Collaborative Innovation Center of Henan Province,Luoyang 471003,China;High-End Bearing Collaborative Innovation Center of Henan Province,Luoyang 471003,China;School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]机械装备先进制造河南省协同创新中心,河南洛阳471003 [3]高端轴承河南省协同创新中心,河南洛阳471003 [4]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《轴承》2024年第12期35-39,共5页Bearing

基　　金：国家自然科学基金资助项目(52005159);河南省科技研发计划联合基金青年科学家项目(225200810073);河南省科技研发计划联合基金应用攻关项目(232103810043);河南省高校科技创新人才支持计划资助项目(24HASTIT043);河南省高等学校青年骨干教师培养计划(2021GGJS048);河南省青年人才托举工程项目(2023HYTP050)。

摘　　要：越来越多的轴承具有高可靠性、长寿命的特点,针对该类轴承的定时截尾寿命试验,提出了一种基于区间统计量的可靠性评估方法:充分利用从最后一个失效数据继续试验到没有发生产品失效这一重要试验信息,结合威布尔分布建立了轴承的寿命分布模型,并根据高斯-马尔科夫定理提出了基于区间统计量的轴承寿命分布参数最佳线性无偏估计方法,同时推导出轴承可靠度和可靠寿命的单侧置信下限。通过仿真分析和某圆柱滚子轴承试验验证了该方法的有效性和适用性,结果表明与极大似然估计法和最小二乘法相比,该方法更接近真实值。More and more bearings have the characteristics of high reliability and long life.Aimed at fixed time truncated life test of these bearings,a reliability evaluation method is proposed based on interval statistics.By fully utilizing the important test information of continuing the test from last failure data until no product failure occurs.The life distribution model of bearings is established by combining Weibull distribution.According to Gaussian-Markov theorem,the best linear unbiased estimation method for life distribution parameters of bearings is proposed based on interval statistics.At the same time,the one-sided confidence lower limit of reliability and reliable life for bearings is derived.The effectiveness and applicability of the proposed method are verified by simulation analysis and test of cylindrical roller bearings.The results show that compared with maximum likelihood estimation method and least square method,the proposed method is closer to actual value.

关 键 词：滚动轴承 圆柱滚子轴承 可靠性评估 截尾寿命试验 威布尔分布 极大似然估计法 最小二乘法 

分 类 号：TH133.332[机械工程—机械制造及自动化] O213.2[理学—概率论与数理统计]