用遗传变异法评估航天轴承摩擦力矩  

Assessment of Friction Torque for Space Bearings Using Genetic-Variation Method

作　　者：徐永智[1] 夏新涛[2] 

机构地区：[1]西北工业大学机电学院,西安710072 [2]河南科技大学机电工程学院,河南洛阳471003

出　　处：《轴承》2014年第1期27-30,共4页Bearing

基　　金：国家自然科学基金项目(51075123;50675011)

摘　　要：将轴承摩擦力矩稳定性因数、平稳性因数作为重要参数,使用正态分布函数模拟摩擦力矩概率密度函数,以此分离出轴承摩擦力矩变异数据及其发展趋势分析轴承性能。结果表明,变异因子发展趋势在轴承使用性能和寿命评估中具有重要作用。Taking the stability factor and smooth factor of bearing friction torque as the important parameters, the nor- mal distribution function is used to simulate probability density function of the friction torque. The variation data and its development trend of bearing friction torque are isolated, and the bearing performance is analyzed. The results show that the development trend of mutagenic factor plays important role in operation performance and life assessment of bear- ings.

关 键 词：滚动轴承 摩擦力矩 平稳性因数 概率密度函数 变异因子 

分 类 号：TH133.33[机械工程—机械制造及自动化]