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Proceedings Paper

Upgrading the MMT primary mirror actuator test stand: a unique vehicle for evaluating EtherCAT as a future I/O standard for systems
Author(s): Dusty Clark; Skip Schaller
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Paper Abstract

The MMT Observatory (MMTO) uses a complex system of pneumatic actuators to support the telescope's 6.5m primary mirror. For operational checkout after repair and to collect calibration data for use in the primary mirror support control software, the Steward Observatory Mirror Lab (SOML) built a test stand that accurately measures the output forces and moments from the actuator using a 6-DOF (degree of freedom) work plate. The electronics and software provided by SOML are outdated and needed replacing. In this report, we discuss the selection of EtherCAT as the data-acquisition hardware, the software development required, and the some aspects of using the test stand in the lab.

Paper Details

Date Published: 27 September 2012
PDF: 8 pages
Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 84445P (27 September 2012); doi: 10.1117/12.925452
Show Author Affiliations
Dusty Clark, MMT Observatory, Univ. of Arizona (United States)
Skip Schaller, MMT Observatory, Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 8444:
Ground-based and Airborne Telescopes IV
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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