长寿命卫星活动机构固体润滑轴承特性  

Solid lubricating bearing characteristics of long life satellite rotation mechanism

作　　者：刘庭伟[1] 张宁[1] 梁伟[2] 张亮[1] 

机构地区：[1]中国航天标准化与产品保证研究院,北京100071 [2]上海卫星工程研究所,上海200240

出　　处：《计算机辅助工程》2013年第A01期247-252,共6页Computer Aided Engineering

基　　金：民用航天"十一五"技术预先研究项目

摘　　要：为对长寿命卫星活动机构固体润滑轴承进行寿命评价,首先结合赫兹接触理论研究轴承失效的物理量化模型;其次,应用Adams从轴承动力学的角度模拟其安装于单机载荷上的实际工况,得到轴承内部接触摩擦特性及受力特性变化规律;最后,通过试验及得到的相关数据对仿真结果进行闭环验证.研究结果验证该类固体润滑轴承动力学建模方法的正确性,为低速固体润滑类轴承内部润滑失效提供定量的判据,并对最终提高二维扫描机构长寿命的方法提供借鉴.To evaluate the life of solid lubricated bearing of rotation mechanism on the long life satellite, firstly, the physical quantitative model of the bearing failure mode is researched combining with the theory of Hertz contact theory. Secondly, from the aspect of bearing dynamics, the actual working condition of the bearing which is installed on the single load is simulated through Adams and the bearing contact friction properties and mechanical properties rule are gained. Finally, the simulation results are verified with several measurable physical quantities through actual test and the closed loop verification goal is achieved. The research results validate that the solid lubricated bearing dynamics modeling method is correct, which can provide internal lubrication failure of low speed solid lubrication bearing with the quantitative criteria. Finally, a method on improvement of the long life of 2D scanning mechanism is proposed

关 键 词：扫描机构 赫兹接触 多体动力学 摩擦力矩 

分 类 号：TH133.3[机械工程—机械制造及自动化]