高分辨率空间相机焦面及次镜调整系统  

Focal plane and secondary mirror adjustment system of high-resolution space camera

作　　者：左洋[1] 刘兵[2] Zuo Yang;Liu Bing(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun;Changchun University,Changchun 130000,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]长春大学,长春130000

出　　处：《电子测量技术》2018年第20期128-135,共8页Electronic Measurement Technology

摘　　要：为了提高高分辨率空间相机离焦补偿的可靠性,保证主、次镜之间的相对位姿在允许的精度范围内,确保空间遥感相机的成像质量,提出一种空间相机焦面及次镜调整系统。首先,介绍了系统的构成及工作原理;然后,描述了空间相机焦面及次镜调整系统的硬件设计和软件设计情况;最后,对空间相机焦面及次镜调整系统进行实验验证。实验结果表明,调焦机构与次镜六自由度机构的位置控制精度均在±2μm内,相应编码器闭环控制精度范围在±3个码值内,满足总体设计要求,有效地提高了高分辨率空间相机焦面及次镜调整的可靠性。In order to improve the reliability of high-resolution space camera defocus compensation, ensure that the relative position between the primary and secondary mirror in the allowed range of accuracy, guarantee the quality of image in the remote sensing camera space, a spatial camera focal plane and secondary mirror adjustment system was proposed. First of all, the system′s composition and working principle was introduced. Then, the hardware design and software design of the focal plane and secondary mirror adjustment system of the space camera were described. Finally, the experimental verification of the spatial camera focal plane and secondary mirror adjustment system was verified by experiment. The experimental results showed that the position control accuracy of focusing mechanism and six degrees of freedom mechanism were within ± 2 μm. The corresponding encoder closed-loop control accuracy was within ± 3 code values. The overall design requirements was satisfied. The adjusting reliability of the high-resolution space camera focal plane and secondary mirror was effectively improved.

关 键 词：空间相机 焦面 次镜 光电编码器 

分 类 号：TN762[电子电信—电路与系统]