Micro-vibration Modeling and Verification of Shutter Mechanism of Survey Space Telescope  

作　　者：Tong-Lei Jiang Li-Hua Wen Hu Zhan Bo Wang Yong-Chao Yang 

机构地区：[1]School of Astronautics,Northwestern Polytechnical University,Xi’an 710072,China [2]National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

出　　处：《Research in Astronomy and Astrophysics》2023年第1期242-253,共12页天文和天体物理学研究（英文版）

基　　金：financial support for the CSST Survey Camera from the China Manned Space Program through its Space Application System。

摘　　要：The scientific research mission of the Survey Space Telescope(also known as the China Space Station Telescope,CSST)imposes rigorous requirements on the observation precision.However,microvibrations generated by the shutter mechanism can seriously affect the performance of the highly precise and sensitive instruments onboard.This study presents a dynamic model and verifies its performance using experimental results.Indeed,a five-degreeof-freedom nonlinear dynamic model that considers all interference sources and bearing nonlinearity is established.The validity of the proposed model is verified using experimental measurements of the microvibration characteristics.The obtained results proved that the proposed dynamic model can accurately predict the characteristics of the microvibrations caused by the shutter mechanism in the design stage and provide a theoretical basis for the development of CSST.

关 键 词：telescopes-surveys-methods NUMERICAL-METHODS analytical 

分 类 号：P111[天文地球—天文学]