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挠性支承对飞轮隔振系统性能的影响分析
引用本文:陈辰,王虹,武登云,樊亚洪,关新.挠性支承对飞轮隔振系统性能的影响分析[J].空间控制技术与应用,2016,42(2):32-37.
作者姓名:陈辰  王虹  武登云  樊亚洪  关新
作者单位:北京控制工程研究所;北京控制工程研究所;北京控制工程研究所;北京控制工程研究所;北京控制工程研究所
基金项目:国家自然科学基金资助项目(51405015和61503015)
摘    要:飞轮的高速转子在运转过程中会激发微幅多频振动,对航天器的高精度姿态稳定控制产生不利影响.本文基于飞轮隔振系统结构,建立其动力学模型,并通过实验验证该被动隔振装置的固有模态.对增加挠性支承的飞轮隔振系统的数学模型,通过仿真分析隔振装置在挠性支承条件下对飞轮扰动的抑制效果,实验测试了不同挠性支承条件对飞轮隔振系统微振动特性的影响.结果表明,隔振装置在悬臂挠性支承条件下依然具有优异的隔振性能,挠性支承刚度的适当减弱有利于飞轮隔振系统抑制扰动;挠性支承刚度会降低飞轮隔振系统的二阶结构固有振动频率,但基本不影响其涡动特性.

关 键 词:挠性支承  飞轮  被动隔振  微振动

Effects of the Flexible Brackets on Flywheel Isolation System
CHEN Chen,WANG Hong,WU Dengyun,FAN Yahong and GUAN Xin.Effects of the Flexible Brackets on Flywheel Isolation System[J].Aerospace Contrd and Application,2016,42(2):32-37.
Authors:CHEN Chen  WANG Hong  WU Dengyun  FAN Yahong and GUAN Xin
Institution:Beijing Institute of Control Engineering, Beijing 100190;Beijing Institute of Control Engineering, Beijing 100190;Beijing Institute of Control Engineering, Beijing 100190;Beijing Institute of Control Engineering, Beijing 100190;Beijing Institute of Control Engineering, Beijing 100190
Abstract:The micro amplitude and multi frequency vibrations can make the system unable to meet the requirements for the attitude precision and stability, which are produced by the high speed rotor operation in flywheels installed on the spacecraft. Based on the structure of flywheel isolation system, a natural property of the isolator is validated. For the flywheel isolation system with a flexible bracket, a mathematical model is established. The effects on the characteristics of flywheel micro vibration are studied, The research results show that the isolator presents a superior property on vibration isolation. The decrease of stiffness of the flexible bracket can help flywheel isolation system suppress the vibrations. The stiffness of flexible bracket can reduce the second order of the system natural vibration frequency, but almost has no effects on the whirl characteristics.
Keywords:
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