掠入射聚焦型X射线脉冲星望远镜装配误差分析与在轨验证

doi:10.3901/JME.2018.11.049

机械工程学报 ›› 2018, Vol. 54 ›› Issue (11): 49-60.doi: 10.3901/JME.2018.11.049

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掠入射聚焦型X射线脉冲星望远镜装配误差分析与在轨验证

李连升¹, 梅志武¹, 邓楼楼¹, 吕政欣¹, 刘继红², 孙建波¹, 孙艳¹, 周昊¹, 左富昌¹

1. 北京控制工程研究所北京 100190;
2. 北京航空航天大学机械工程及自动化学院北京 100191

收稿日期:2017-08-30 修回日期:2017-12-11 出版日期:2018-06-05 发布日期:2018-06-05
通讯作者: 李连升(通信作者),男,1981年出生,博士,高级工程师。主要研究方向为航天器结构设计与装配、脉冲星探测与导航技术。E-mail:liliansheng1981@163.com
基金资助:
国家自然科学基金（51175019）和国家重点研发计划重点专项（2017YFB0503300）资助项目。

Assembly Error Analysis and In-orbit Verification of Grazing Incidence Focusing X-ray Pulsar Telescope

LI Liansheng¹, MEI Zhiwu¹, DENG Loulou¹, LÜ Zhengxin¹, LIU Jihong², SUN Jianbo¹, SUN Yan¹, ZHOU Hao¹, ZUO Fuchang¹

1. Beijing Institute of Control Engineering, Beijing 100190;
2. School of Mechanical Engineering & Automation, Beihang University, Beijing 100191

Received:2017-08-30 Revised:2017-12-11 Online:2018-06-05 Published:2018-06-05

摘要/Abstract

摘要： 针对掠入射聚焦型X射线脉冲星望远镜多源装配误差影响光学性能的问题，提出了空间X射线聚焦光学产品装配误差分析方法。综合考虑偏心、倾斜、离焦以及装配应力引起面形畸变等装配误差，基于小位移旋量理论和空间位姿变换矩阵构建产品装配误差理论分析模型。采用光矢量计算和蒙特卡洛法定量分析了装配误差对聚焦性能的影响，倾斜误差对聚焦性能影响最大，倾斜误差1'可导致焦斑RMS值增大约0.3~0.4 mm。0'、3.75'和6'视场所允许的倾斜误差极限分别为5.31'、3.14'和1.38'。偏心误差和离焦误差影响较小，视场为0~6'所允许的误差极限约为0.45~0.50 mm，离焦误差允许的变化范围为±5 mm。装配应力与自重产生的最大面形误差约为101 nm，RMS为14.17 nm，6~7'视场的面形误差对焦斑的影响最大（约9.46%）。搭建了具有多自由度调整与图像处理算法的装调系统，实现了焦斑RMS为0.78 mm的精密装配。地面装配试验与在轨遥测数据验证了装配误差理论分析与精密装配方法的有效性。该方法对空间X射线聚焦型望远镜的精密装配研究具有指导意义。

关键词: 聚焦型X射线望远镜, 空间位姿变换矩阵, 在轨验证, 装配误差分析

Abstract: Aiming at the issue of optical performance of grazing incidence focusing X-ray pulsar telescope affected by multi-source assembly errors, an assembly error analysis method of spatial X-ray focusing optical product is proposed. Considering the assembly error such as eccentricity, inclination, defocusing and surface distortion caused by assembly stress, the theoretical analysis model of product assembly error is constructed based on the small displacement torsor theory and spatial position and posture transformation matrix. The influence of assembly error on focusing performance was quantitatively analyzed by optical vector calculation and Monte Carlo method. Tilt error has the greatest impact on focusing performance, in which the tilt error 1' can cause the focal spot RMS to increase by about 0.3-0.4 mm. The allowable tilt error limits for the 0', 3.75' and 6' field of views are 5.31', 3.14' and 1.38' respectively. Whereas, eccentricity error and defocus error are less affected, the permissible error limit for the field of view 0-6 is approximately 0.45-0.50 mm and the defocus error can be relaxed to ±5 mm. The maximum profile error of assembly stress and self weight is about 101nm and RMS is 14.17 nm. The profile error of 6-7' field of view has the greatest effect on focal spot (about 9.46%). An assembly adjustment system with multi-degree-of-freedom adjustment and image processing algorithm is formulated to realize the precision assembly of 0.78 mm of focal spot RMS. The results of assembly test and in-orbit telemetry data verify the effectiveness of assembly error theory analysis and precision assembly method. The proposed method has guiding significance for the precision assembly of space X-ray focusing telescope.

Key words: assembly error analysis, focusing X-ray telescope, in-orbit verification, spatial position and attitude transformation matrix

中图分类号:

TH122
O213

李连升, 梅志武, 邓楼楼, 吕政欣, 刘继红, 孙建波, 孙艳, 周昊, 左富昌. 掠入射聚焦型X射线脉冲星望远镜装配误差分析与在轨验证[J]. 机械工程学报, 2018, 54(11): 49-60.

LI Liansheng, MEI Zhiwu, DENG Loulou, LÜ Zhengxin, LIU Jihong, SUN Jianbo, SUN Yan, ZHOU Hao, ZUO Fuchang. Assembly Error Analysis and In-orbit Verification of Grazing Incidence Focusing X-ray Pulsar Telescope[J]. Journal of Mechanical Engineering, 2018, 54(11): 49-60.

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掠入射聚焦型X射线脉冲星望远镜装配误差分析与在轨验证

Assembly Error Analysis and In-orbit Verification of Grazing Incidence Focusing X-ray Pulsar Telescope

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