Optimization design of secondary mirror for near space telescope

2021 ◽  
Vol 50 (2) ◽  
pp. 20200178-20200178
Author(s):  
刘奉昌 Fengchang Liu ◽  
李威 Wei Li ◽  
赵伟国 Weiguo Zhao ◽  
王克军 Kejun Wang ◽  
赵海波 Haibo Zhao ◽  
...  
Keyword(s):  
Optimization Design ◽  
Space Telescope ◽  
Near Space ◽  
Secondary Mirror

Optimization design of secondary mirror for near space telescope

2021 ◽  
Vol 50 (2) ◽  
pp. 20200178-20200178
Author(s):  
刘奉昌 Fengchang Liu ◽  
李威 Wei Li ◽  
赵伟国 Weiguo Zhao ◽  
王克军 Kejun Wang ◽  
赵海波 Haibo Zhao ◽  
...  
Keyword(s):  
Optimization Design ◽  
Space Telescope ◽  
Near Space ◽  
Secondary Mirror

Design and analysis of supporting structure between the primary mirror and the secondary mirror on a space telescope

2015 ◽  
Author(s):  
Chenjie Wang ◽  
Wenyi Chai ◽  
Liangjie Feng ◽  
Wengang Yang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Space Telescope ◽  
Primary Mirror ◽  
Supporting Structure ◽  
Secondary Mirror

Research on lightweight passive deployment mechanism for the secondary mirror in the deployable space telescope

2016 ◽  
Author(s):  
Peifeng Zhong ◽  
Chuang Li ◽  
Nan Jing ◽  
Yaqin Chong ◽  
Guorui Ren
Keyword(s):  
Space Telescope ◽  
Secondary Mirror

Design of primary mirror assembly with compound support for Φ816 mm near space telescope

2021 ◽  
Vol 29 (3) ◽  
pp. 558-570
Author(s):  
Zhi-bang LUO ◽  
◽  
Wei LI ◽  
Jia-kun XU ◽  
Ke-jun WANG ◽  
...  
Keyword(s):  
Space Telescope ◽  
Primary Mirror ◽  
Near Space

Improved cuckoo calibration method of space telescope secondary mirror adjusting mechanism

2018 ◽  
Vol 47 (5) ◽  
pp. 518002
Author(s):  
王 瀚 Wang Han ◽  
曹小涛 Cao Xiaotao ◽  
赵伟国 Zhao Weiguo ◽  
赵海波 Zhao Haibo ◽  
杨维帆 Yang Weifan ◽  
...  
Keyword(s):  
Calibration Method ◽  
Space Telescope ◽  
Secondary Mirror

scholarly journals Design and Implementation of a High Precision Stewart Platform for a Space Camera

2021 ◽  
Vol 2101 (1) ◽  
pp. 012015
Author(s):  
Fengchao Liang ◽  
Shuang Tan ◽  
Jiankai Fan ◽  
Zhe Lin ◽  
Xiaojun Kang
Keyword(s):  
High Precision ◽  
Optimization Design ◽  
Degrees Of Freedom ◽  
Structural Parameters ◽  
Stewart Platform ◽  
Ball Screw ◽  
Dual Frequency ◽  
Loop Control ◽  
Brushless Dc ◽  
Secondary Mirror

Abstract In order to design and implement a high-precision Stewart platform to precisely adjust the position and posture of the secondary mirror of a space camera, the following measures were taken: firstly, the inverse mathematical model and ADAMS parametric model of the Stewart platform are established, which are the basis of structural optimization design; secondly, the structural parameters of Stewart platform are obtained through structure optimization design in ADAMS after determining the objective function; thirdly, a 50nm resolution driving strut based on brushless DC motor, ball screw, grating ruler and PI closed-loop control law is designed, which strongly guaranteed the six degrees’ resolution of the Stewart platform that mainly consist of 6 such high-resolution driving struts; finally, the accuracy of Stewart platform is tested via dual frequency laser interferometer and photoelectric autocollimator, and the test results show that the displacement resolution of the Stewart platform is 0.2 μ m, and the angular resolution is 1”, which meets the requirements of the index. The Stewart platform has been successfully applied to the space camera by tuning the secondary mirror precisely in 6 degrees of freedom in the optical alignment experiment, which lays a solid theoretical and practical foundation for on orbit application in future.

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