Structure optimization design of a thin-film diffraction imaging system based on the Kriging model and the improved particle swarm optimization algorithm
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Published:2021-09-20
Issue:2
Volume:12
Page:875-889
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ISSN:2191-916X
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Container-title:Mechanical Sciences
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language:en
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Short-container-title:Mech. Sci.
Author:
Wang Yitian,Zhang Liu,Zhao Huanyu,Zhang Fan
Abstract
Abstract. A thin-film diffraction imaging system is a type of
space telescope imaging system with high resolution and loose surface
tolerance often used in various fields, such as ground observation and
military reconnaissance. However, because this system is a large and
flexible multi-body structure, it can produce flexural vibration easily
during the orbit operation, which has a serious effect on the attitude
stability of the system and results in low pointing accuracy. Therefore,
this study proposes an optimization method based on the Kriging model and
the improved particle swarm optimization algorithm to improve the stability and
optimize the structure of the entire system. Results showed the area–mass
ratio of the thin-film diffraction imaging system decreased by 9.874 %,
the first-order natural frequency increased by 23.789 %, and the attitude
stability of the thin-film diffraction imaging system improved.
Funder
National Key Research and Development Program of China National Outstanding Youth Science Fund Project of National Natural Science Foundation of China Shanghai Academy of Spaceflight Technology
Publisher
Copernicus GmbH
Subject
Industrial and Manufacturing Engineering,Fluid Flow and Transfer Processes,Mechanical Engineering,Mechanics of Materials,Civil and Structural Engineering,Control and Systems Engineering
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