Analysis of a Supporting System with a Stewart Platform for Telescope Secondary Mirror

GU Bo-zhong; YUE Zhong-yu

Astronomical Research and Technology > 2009 > 6(4): 334-341.

GU Bo-zhong, YUE Zhong-yu. Analysis of a Supporting System with a Stewart Platform for Telescope Secondary Mirror[J]. Astronomical Research and Technology, 2009, 6(4): 334-341.

Citation:

GU Bo-zhong, YUE Zhong-yu. Analysis of a Supporting System with a Stewart Platform for Telescope Secondary Mirror[J]. Astronomical Research and Technology, 2009, 6(4): 334-341.

Citation:

GU Bo-zhong, YUE Zhong-yu. Analysis of a Supporting System with a Stewart Platform for Telescope Secondary Mirror[J]. Astronomical Research and Technology, 2009, 6(4): 334-341.

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Analysis of a Supporting System with a Stewart Platform for Telescope Secondary Mirror

GU Bo-zhong¹,
YUE Zhong-yu^1,2, ,

1.
National Astronomical Observatories, Nanjing Institute of Astronomical Optics&Technology, Chinese Academy of Sciences, Nanjing 210042, China
2.
Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

More Information

Received Date: March 10, 2009
Revised Date: March 15, 2009
Published Date: October 14, 2009

Graphical Abstract

Abstract

Abstract

A virtual prototype model of a new type of 6-PSS parallel structure was established.The stiffness, the precision, and the layout of the drive in the 6-PSS parallel structure, which was used in the supporting system of the secondary mirror in our 2-meter level astronomical telescope, were better than those in a 6-SPS parallel structure.There are seven parameters in the model to define the structure.The paper focuses on the analysis of the relation between stick force and elevation angle, which needs to be particularly and carefully considered in applications to telescopes.We also derived a method for setting the parameters, which allows the states of stick force to change rather weakly and limits the maximum stick force for the range of the elevation angle of 0° to 90°.
- astronomical telescope,
- secondary mirror support,
- Stewart platform,
- virtual prototype,
- elevation angle

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References (5)

References

[1]	程景全.天文望远镜原理和设计[M].北京:中国科学技术出版社, 2003.
[2]	D Stewart.A Platform with Six Degrees of Freedom[J].UK Institution of Mechanical Engineers Proceedings, 1965, 180(15):Pt 1.
[3]	文新荣, 胡企千, 周尊源.望远镜主副镜实时校正系统[J].中国机械工程, 2003, 14(14):1191-1193.
[4]	Peng ZHUANG, Zhengqiu YAO.Dynamics and control of cable-suspended parallel robots for giant telescopes[J].SPIE, 2006:6267:62673H.
[5]	郑建荣.ADAMS-虚拟样机技术入门与提高[M].北京:机械工业出版社, 2001.

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