可用于空间望远镜主动支撑主镜的主动减振技术研究
Research on Active Vibration Reduction Technology for Actively Supporting Main Mirror of Space Telescope
刘宗豪 1牛冬生 2叶宇2
作者信息
- 1. 中国科学院南京天文光学技术研究所,江苏 南京 210042;中国科学院天文光学技术重点实验室(南京天文光学技术研究所),江苏 南京 210042;中国科学院大学,北京 100049
- 2. 中国科学院南京天文光学技术研究所,江苏 南京 210042;中国科学院天文光学技术重点实验室(南京天文光学技术研究所),江苏 南京 210042
- 折叠
摘要
空间望远镜发射过程中,振动会对空间望远镜的主镜产生不可逆的伤害,被动减振方法对高频振动的减振效果较为理想,对低频振动的减振效果较差.为了有效抑制低频振动的传递,实验引入主动隔振装置,采用基于加速度反馈的主动隔振控制策略,从永磁弹簧式力促动器的设计、主镜谐响应分析、主动减振系统实验验证3个方面进行研究.结果表明,引入主动减振系统后,实验系统低频振动的振幅降低程度在50%左右.
Abstract
During the launch process of space telescope,vibrations can cause irreversible harm to the main mirror.Passive vibration reduction methods are ideal for high-frequency vibrations,but they are less effective for low-frequency vibrations.To effectively suppress transmission of low-frequency vibrations,an active isolation device is introduced.The proposed method employs an active vibration isolation control strategy based on acceleration feedback.This study is carried out in three aspects,which are the design of a permanent magnet spring force actuator,anlysis of main mirror's harmonic response,and experimental verification of active vibration reduction system.Results indicate that,with the introduction of active vibration reduction system,the amplitude of low-frequency vibrations in the experimental system decreases by～50%.
关键词
光学天文望远镜/永磁弹簧式力促动器/谐响应分析/主动减振Key words
optical astronomical telescope/permanent magnet spring force actuator/harmonic response analysis/active vibration reduction引用本文复制引用
出版年
2024
NETL
NSTL
万方数据