中国空间科学技术

中国空间科学技术 ›› 2025, Vol. 45 ›› Issue (2): 94-102.doi: 10.16708/j.cnki.1000-758X.2025.0027

• 论文 • 上一篇    下一篇

空间光学遥感相机伸展支撑机构设计与分析

王庆雷1,2,陈亚新1,*,张鑫3,杨路伟4,孙德伟1,2,黄巧林1,2,史创4,蔺宇辉1,2   

  1. 1.北京空间机电研究所，北京100094
    2.先进光学遥感技术北京市重点实验室，北京100094
    3.哈尔滨工程大学 机电工程学院，哈尔滨150001
    4.哈尔滨工业大学 机电工程学院，哈尔滨150001
  • 收稿日期:2024-01-04 修回日期:2024-03-29 录用日期:2024-04-19 发布日期:2025-03-13 出版日期:2025-04-01

Design and analysis of extension support mechanism for space optical remote sensing camera

WANG Qinglei1,2, CHEN Yaxin1,*, ZHANG Xin3, YANG Luwei4, SUN Dewei1,2, HUANG Qiaolin1,2, SHI Chuang4, LIN Yuhui1,2   

  1. 1.Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China
    2.Key Laboratory for Advanced Optical Remote Sensing Technology of Beijing, Beijing 100094, China
    3.College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
    4.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2024-01-04 Revision received:2024-03-29 Accepted:2024-04-19 Online:2025-03-13 Published:2025-04-01

PDF (PC)

33

摘要： 相机伸展机构展开锁定后需要能够获得并保持足够的刚度及尺寸稳定性，同时针对特定空间光学遥感相机高精度高展收比的需求，设计了一种采用高刚度涡卷弹簧来实现铰链间隙消除及展开后结构高刚度保持的一维空间光学遥感相机高精度高展收比伸展支撑机构。该伸展支撑机构采用涡卷弹簧驱动折展杆来实现机构展开，控速机构控制展开速度，展开后通过铰链定位面定位，涡卷弹簧剩余驱动力和张力索保持刚度。开展了伸展支撑机构的展开动力学分析、模态分析、考虑构件长度误差与铰链回转间隙的展开精度分析、工作环境下的热变形分析。设计完成相机伸展支撑机构，该机构展开基频在20Hz以上，对伸展机构样机进行了地面重复展收精度测量，展开精度优于±0.05mm，伸展支撑机构性能良好，满足空间光学遥感相机特殊任务需求。

关键词: 伸展支撑机构, 动力学, 模态分析, 精度分析, 重复展收精度测量

Abstract: The camera extension mechanism needs to obtain and maintain sufficient stiffness and dimensional stability after unfolding and locking, and at the same time, for the demand of high precision and high spread ratio of specific space optical remote sensing camera, a one-dimensional space optical remote sensing camera with high precision, high spread ratio extension support mechanism and high stiffness volute springs is designed to realize the elimination of the hinge gap and the maintenance of high stiffness of the structure after unfolding. The extension support mechanism uses a scroll spring to drive the folding spreading bar to realize the mechanism unfolding, a speed control mechanism to control the speed of deploying, and a hinged positioning surface to locate the hinge when deployed, with the residual driving force of the scroll spring and the tension cable to maintain the stiffness. The unfolding dynamics analysis, modal analysis, unfolding accuracy analysis considering the length error of the member and the hinge rotary gap, and thermal deformation analysis under the working environment are carried out for the unfolding support mechanism. The camera extension support mechanism is completed, and the base frequency of the mechanism is above 20Hz. The ground repeatable unfolding accuracy of the prototype extension mechanism is measured, and the unfolding accuracy is better than ±0.05mm. The performance of the extension support mechanism is good, and it can satisfy the requirements of the special tasks of the space optical remote sensing camera.

Key words: extension support mechanism, dynamics, modal analysis, precision analysis, repetitive deployable accuracy measurement