航天器工程2017，Vol.26Issue(5)：34-39,6.DOI:10.3969/j.issn.1673-8748.2017.05.006
卫星在轨微振动隔离系统动力学分析
Dynamic Analysis of In-orbit Satellite Micro-vibration Isolation System
摘要
Abstract
Motions of payload and satellite are coupled in an active Stewart vibration isolation system if they have similar mass.The Newton-Euler method is used to establish dynamic equation of the Stewart vibration isolation system in this paper.Dynamic equation of the motion coupling model in which payload and satellite have similar mass and dynamic equation of motion uncoupling model in which satellite has infinite mass are established.Dynamic responses of the two models are analyzed and compared.The result shows that dynamic characteristics of the Stewart vibration isolation sys-tem using above models are quite different.If the mass of payload is similar satellite,the motion coupling model has large peak value of rotation,small peak value of translational and high system mode frequency.Therefore,it is essential to use the motion coupling model if payload and satel-lite have similar mass.This study provides guidance for satellite micro-vibration isolation.关键词
Stewart隔振系统/微振动/运动耦合/动力学分析Key words
Stewart vibration isolation system/micro-vibration/motion coupling/dynamic analysis分类
航空航天引用本文复制引用
刘大伟,陈卫东,刘兴天,周徐斌..卫星在轨微振动隔离系统动力学分析[J].航天器工程,2017,26(5):34-39,6.基金项目
国家自然科学基金(51505294) （51505294）
