
Proceedings Paper
Kinematic modeling and path planning for MIRADAS armsFormat | Member Price | Non-Member Price |
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Paper Abstract
The Mid-resolution InfRAreD Astronomical Spectrograph (MIRADAS) is a near-infrared (NIR) multi-object
spectrograph for the Gran Telescopio Canarias (GTC). It can simultaneously observe multiple targets selected by
20 identical deployable probe arms with pickoff mirror optics. The bases of the arms are fixed to the multiplexing
system (MXS) plate, a circular platform, and arranged in a circular layout with minimum separation between
elements of the arms. This document presents the MXS prototype P2a, a full-scale, fully operational prototype
of a MIRADAS probe arm. This planar closed-loop mechanism compared to other previous designs offers some
advantages specially in terms of stability and from the point of view of optics. Unfortunately, these benefits come
at the expense of a more complicated kinematics and an unintuitive arm motion. Furthermore, the cryogenic
motor controllers used in prototyping impose severe restrictions in path planing. They negatively impact in the
slice of pie approach, a collision-avoidance patrolling strategy that can gives good results in other scenarios. This
study is a starting point to define collision-free trajectory algorithms for the 20 probe arms of MIRADAS.
Paper Details
Date Published: 18 July 2014
PDF: 13 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91515S (18 July 2014); doi: 10.1117/12.2055466
Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)
PDF: 13 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91515S (18 July 2014); doi: 10.1117/12.2055466
Show Author Affiliations
Josep Sabater, Univ. de Barcelona (Spain)
José María Gómez, Univ. de Barcelona (Spain)
Manuel López, Univ. de Barcelona (Spain)
José María Gómez, Univ. de Barcelona (Spain)
Manuel López, Univ. de Barcelona (Spain)
Jordi Torra, Univ. de Barcelona (Spain)
Steven N. Raines, Univ. of Florida (United States)
Stephen S. Eikenberry, Univ. of Florida (United States)
Steven N. Raines, Univ. of Florida (United States)
Stephen S. Eikenberry, Univ. of Florida (United States)
Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)
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