摘要
针对空间相机系统的像旋问题,利用柔性铰链设计一种新型的像旋补偿机构,通过带动空间相机旋转进行像旋补偿;根据柔性单元的结构特性建立柔性单元的理论计算模型,通过有限元仿真,计算多组不同结构参数的柔性单元的变形,根据理论模型分析柔性单元变形与各结构参量的关系,最终确定柔性单元的几何参数,并对其进行有限元仿真。结果表明:仿真结果与理论计算模型的最大相对误差均小于5%,验证了理论计算模型的准确性;该机构能够实现空间相机转角为-3′~3′的像旋补偿,并且控制精度较高。
Regarding the image rotation problem of space cameras,a new image rotation compensation mechanism was designed by using flexible hinges,which could directly rotate space cameras to eliminate image rotation.According to structural characteristics of flexible units,a theoretical calculation model of flexible units was established.Deformation of flexible units with different structural parameters was calculated through finite element simulation.Relationship between the deformation of flexible units and parameters of each structure was analyzed.Geometric parameters of flexible units were finally determined,and the finite element simulation was carried out.The results show that the maximum relative error between simulation results and the theoretical calculation model is less than 5%,which verifies accuracy of the theoretical calculation model.This mechanism can complete the image rotation compensation with rotating angle of-3′~3′,and the control precision is high.
作者
李林
颜昌翔
田海英
李颐
丁宁
LI Lin;YAN Changxiang;TIAN Haiying;LI Yi;DING Ning(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,Jilin,China;School of Optoelectronics,University of Chinese Academy of Science,Beijing 100049,China;Center of Materials Science and Opto-electrics Engineering,University of Chinese Academy of Science,Beijing 100049,China)
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2021年第2期95-101,共7页
Journal of University of Jinan(Science and Technology)
基金
国家重点研发计划项目(2016YFF0103603)。
关键词
空间相机
像旋补偿
柔性铰链
有限元仿真
space camera
image rotation compensation
flexible hinge
finite element simulation
作者简介
第一作者简介:李林(1995—),男,山东烟台人。硕士研究生,研究方向为光机结构优化设计。E-mail:li.lin.work@foxmail.com;通信作者:田海英(1975—),女,山西汾阳人。研究员,博士,硕士生导师,研究方向为光机结构设计。E-mail:tianhy@ciomp.ac.cn;通信作者:颜昌翔(1973—),男,湖北洪湖人。研究员,博士,博士生导师,研究方向为空间光学遥感仪器的光机电一体化技术,多光谱、超光谱空间遥感成像技术、偏振探测技术等。E-mail:yancxO128@126.com。
