空间充气式共机架结构自旋动力学及振动抑制  

Spinning dynamics and vibration suppression of a space inflatable tri-boom system

作　　者：黄业雄 蔡正政 杜浩[1] 孙加亮 金栋平[1] HUANG YeXiong;CAI ZhengZheng;DU Hao;SUN JiaLiang;JIN DongPing(State Key Laboratory of Mechanics and Control for Aerospace Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学,航空航天结构力学及控制全国重点实验室,南京210016

出　　处：《中国科学:物理学、力学、天文学》2025年第2期227-238,共12页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家自然科学基金(编号:12232011,12372042)资助项目。

摘　　要：光学合成孔径技术在地球观测、环境监测、宇宙探索等方面有着广泛应用.作为一种新型的空间结构,空间充气式共机架结构具有折展比大、比强度高等特点,可满足光学合成孔径成像系统对于支撑结构的构建需求.本文针对充气式共机架结构,建立了刚-柔耦合多体系统动力学模型,依据在轨动力学环境研究了自旋动力学响应,并根据点扩展函数分析了系统在空间扰动下的光学性能.仿真结果表明,为使空间充气式共机架结构达到光学成像的要求,需要对充气式共机架结构进行振动抑制,为此设计了一种周期性分布的超结构吸振单元,用于抑制光学载荷的振动.最后,通过有限元法计算了超结构的带隙和振动传输特性,并实验验证了提出的超结构吸振单元对于充气式共机架系统振动抑制的可行性和有效性.Optical synthetic aperture techniques are widely used for Earth observation, environmental monitoring, and cosmicexploration. As a new type of space structure, the space inflatable tri-boom system has the advantages of high foldingratio and high specific strength, which can meet the requirements of support structures for optical synthetic aperturesystem. This study develops a dynamic model of rigid-flexible coupled multibody system for the space inflatable triboom system to compute the spinning responses of the optical loads under complex space environment. The opticalperformance of the system under space perturbance is also analyzed according to the point expansion function, revealingthe necessity for vibration suppression. To address this issue, a periodically distributed metastructure is designed tosuppress vibrations of the optical loads. Finally, the band gap and vibration transmissibility of the metastructure arecalculated by the finite element method, and the feasibility and effectiveness of the proposed metastructure for thevibration suppression of the space inflatable tri-boom system are verified by the ground vibration experiment.

关 键 词：充气式共机架 合成孔径成像 自旋动力学 振动抑振 超结构 

分 类 号：TB535.1[理学—物理]