Kinematics analysis of active reflector supporting mechanism for FAST
Kinematics analysis of active reflector supporting mechanism for FAST
- Author(s): Chen Renren ; Tang Xiaoqiang ; Li Tiemin
- DOI: 10.1049/cp:20061084
For access to this article, please select a purchase option:
Buy conference paper PDF
Buy Knowledge Pack
IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.
International Technology and Innovation Conference 2006 (ITIC 2006) — Recommend this title to your library
Thank you
Your recommendation has been sent to your librarian.
- Author(s): Chen Renren ; Tang Xiaoqiang ; Li Tiemin Source: International Technology and Innovation Conference 2006 (ITIC 2006), 2006 p. 1935 – 1939
- Conference: International Technology and Innovation Conference 2006 (ITIC 2006)
- DOI: 10.1049/cp:20061084
- ISBN: 0 86341 696 9
- Location: Hangzhou, China
- Conference date: 6-7 Nov. 2006
- Format: PDF
In the application of active reflector units supporting mechanism for a large spherical radio telescope (five-hundred meter aperture spherical radio telescope: FAST), a spatial three-degree-of-freedom (DOF) parallel mechanism combining two degrees rotation and one degree translation is investigated. In this paper, the mechanism is described in detail and its inverse kinematics solutions are derived. The parasitic motion of this mechanism is analyzed, and the relationships between the parasitic motions and independent motions of the mechanism are illustrated, followed by the Jacobian matrix of the velocity equation. The distribution of conditioning index on the workspace of the mechanism is obtained. And the workspace of the mechanism is numerically generated. The analysis results prove that the parasitic motion is neglectable compared to the independent motion in this application and the mechanism can be used as the supporting mechanism of spherical radio telescope.
Inspec keywords: radiotelescopes; Jacobian matrices; manipulator kinematics; inverse problems
Subjects: Radioastronomical techniques and equipment; Control of astronomical instruments; Mathematical analysis; Mathematical analysis; Algebra; Robot and manipulator mechanics; Manipulators; Algebra
Related content
content/conferences/10.1049/cp_20061084
pub_keyword,iet_inspecKeyword,pub_concept
6
6