Precision Analysis and Experiment of Focusing Mechanism of Space Hyperspectral Camera

doi:10.3901/JME.2019.12.029

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	Precision Analysis and Experiment of Focusing Mechanism of Space Hyperspectral Camera
	K.Wang; M.Xu; P.Xie; Z.Xu; S.Tao
	2019
发表期刊	Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
ISSN	05776686
卷号	55 期号:12 页码:29-36
摘要	For meeting the features and requirements of space hyperspectral camera, the image surface movable focusing mechanism is designed, the motion displacement is in the range of 3 mm, correcting deviated focal plane, and meeting the imaging quality requirements of hyperspectral camera. The working principle of the focusing mechanism is introduced, and the transmission curve and positioning accuracy are theoretically analyzed; Dynamic model of the focusing mechanism is established and the finite element analysis is performed. The relationship test method of code value and displacement of CMOS target plane is discussed in detail, and obtain the reliable focusing formula. The dynamic experiments show that the first-order natural frequency of the focusing mechanism is 182.7 Hz, which can effectively avoid the resonance phenomenon, the acceleration response is reasonable, and has good strength and stiffness; Before and after the dynamic experiments, the closed-loop accuracy tests are performed on the focusing mechanism, and the positioning accuracy is better than 6 m, therefore the focusing mechanism has good stability, which satisfies the 10 m design index and verifies the effectiveness of focusing formula and closed-loop control programs. At present, this set of focusing mechanism has been successfully on-orbit operation, and the indicators are in good condition, which satisfies the imaging quality requirements of hyperspectral camera. 2019 Journal of Mechanical Engineering.
关键词	Dynamics,Cameras,CMOS integrated circuits,Focusing,Hyperspectral imaging,Testing
DOI	10.3901/JME.2019.12.029
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收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63003
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	K.Wang,M.Xu,P.Xie,et al. Precision Analysis and Experiment of Focusing Mechanism of Space Hyperspectral Camera[J]. Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,2019,55(12):29-36.
APA	K.Wang,M.Xu,P.Xie,Z.Xu,&S.Tao.(2019).Precision Analysis and Experiment of Focusing Mechanism of Space Hyperspectral Camera.Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,55(12),29-36.
MLA	K.Wang,et al."Precision Analysis and Experiment of Focusing Mechanism of Space Hyperspectral Camera".Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 55.12(2019):29-36.

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