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Proceedings Paper

Working space analysis and optimization of the main positioning system of FAST cabin suspension
Author(s): Hui Li; Rendong Nan; Hans J. Kärcher; Wenbai Zhu; Jinghai Sun; Markus Lazanowski; Simon Kern; Bruno Strah; Francis Fomi Wamba; Chengjin Jin
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Paper Abstract

This paper devotes to the working space analysis of the main positioning system of FAST cabin suspension, a flexible-cable-driven parallel manipulator. The problem formulation is deduced through equilibrium analysis of the cabin platform and suspension cables, which changes subsequently into a nonlinear constrained optimization intending a uniform allocation of the six cable tension force. The analysis verifies the accessibility of focus cabin to the whole focus surface. The optimization investigates the orientation of the focus cabin under equilibrium and the optimal cable forces, as well as elaborates their importance in the finite element modeling of the cable-cabin system and the respective layout designs of the rotator, Stewart stabilizer and capstan motors. In the end, the influences of the tower height and the position of mass center of the focus cabin on the optimization results are discussed.

Paper Details

Date Published: 10 July 2008
PDF: 11 pages
Proc. SPIE 7012, Ground-based and Airborne Telescopes II, 70120T (10 July 2008); doi: 10.1117/12.790537
Show Author Affiliations
Hui Li, National Astronomical Observatories (China)
Rendong Nan, National Astronomical Observatories (China)
Hans J. Kärcher, MT Mechatronics (Germany)
Wenbai Zhu, National Astronomical Observatories (China)
Jinghai Sun, National Astronomical Observatories (China)
Markus Lazanowski, Technische Univ. Darmstadt (Germany)
Simon Kern, Technische Univ. Darmstadt (Germany)
Bruno Strah, Technische Univ. Darmstadt (Germany)
Francis Fomi Wamba, Technische Univ. Darmstadt (Germany)
Chengjin Jin, National Astronomical Observatories (China)

Published in SPIE Proceedings Vol. 7012:
Ground-based and Airborne Telescopes II
Larry M. Stepp; Roberto Gilmozzi, Editor(s)

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