Kinematic performance analysis of the active reflector mechanism in FAST

Details Kinematic performance analysis of the active reflector mechanism in FAST Kinematic performance analysis of the active reflector mechanism in FAST

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5495..330w&link_type=abstract

Astronomical Structures and Mechanisms Technology. Edited by Antebi, Joseph; Lemke, Dietrich. Proceedings of the SPIE, Volume 54

Astronomy and Astrophysics

Astronomy

Scientific paper

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.

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