望远镜面型误差实时测量与补偿研究  

Research on Real-time Measurement and Compensation of Telesoopic Plane Profile Error

作　　者：窦玉超[1] 张一凡[1] 李建军[1] 刘国玺[1] 段艳宾[1] Dou Yuchao;Zhang Yifan;Li Jianjun

机构地区：[1]中国电子科技集团公司第五十四研究所,石家庄071504

出　　处：《机械制造》2023年第4期76-81,共6页Machinery

基　　金：国家遥感中心平方公里阵列射电望远镜专项(编号:2021SKA0110100)。

摘　　要：为实现大型射电望远镜反射面面型误差实时测量与解耦补偿,满足大口径、高频率射电望远镜对高精度反射面的需求,对望远镜面型误差实时测量与补偿进行了研究。设计了一种基于6SPS型并联机构的面板相对位姿传感器,通过建立数学模型对测量原理进行分析。针对现有主动面调整装置引起的面板误差耦合问题,提出一种6PSS构型调整装置,对安装方式、调整原理进行分析,并建立运动学模型。将面板相对位姿传感器与主动面调整装置相结合,组成反射面精度实时测量与误差解耦补偿系统,建立系统数学模型,通过数值算例验证可行性。In order to realize the real time measurement and decoupling compensation of the reflective surface plane profile error of large radio telescope and meet the need of large aperture and high frequency radio telescope for high precision reflective surface,the real time measurement and compensation of telescope surface plane profile error were studied.A panel relative pose sensor based on 6SPS parallel mechanism was designed,and the measurement principle was analyzed by establishing a mathematical model.Aiming at the problem of panel error coupling caused by the existing active surface adjustment device,a 6PSS type adjustment device was proposed.The installation mode and adjustment principle were analyzed,and the kinematics model was established.The panel relative pose sensor and the active surface adjustment device were combined to form a real time measurement and error decoupling compensation system for the accuracy of the reflective surface.A mathematical model of the system was established,and the feasibility was verified through numerical example.

关 键 词：望远镜 面型 误差 测量 补偿 

分 类 号：TH743[机械工程—光学工程]