Kinematic performance analysis of the active reflector mechanism in FAST

Qi-Ming Wang

doi:10.1117/12.551090

29 September 2004 Kinematic performance analysis of the active reflector mechanism in FAST

Qi-Ming Wang

Proceedings Volume 5495, Astronomical Structures and Mechanisms Technology; (2004) https://doi.org/10.1117/12.551090
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

This paper presents a preliminary study dedicated to a spatial three-degree-of-freedom (3-DoF) parallel mechanism intended to be used as the active reflector surface of a large spherical radio telescope. The forward and inverse kinematic problems of the mechanism are addressed, and solved in analytical form. Since the mechanism has only three degrees of freedom, constraint equations describing the inter-relationship between the six Cartesian coordinates are derived. Furthermore, the Jacobian matrix of the mechanism is obtained. Finally, the dexterity of the mechanism and the parasitic motion are discussed. A simulation result is reported.

Citation Download Citation

Qi-Ming Wang "Kinematic performance analysis of the active reflector mechanism in FAST", Proc. SPIE 5495, Astronomical Structures and Mechanisms Technology, (29 September 2004); https://doi.org/10.1117/12.551090

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