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Proceedings Paper

Upgrading, monitoring and operation of a dome drive system
Author(s): Steven E. Bauman; Bill Cruise; Ivan Look; Grant Matsushige; Larry Roberts; Derrick Salmon; Ralph Taroma; Tom Vermeulen; Krieg Richards
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Paper Abstract

CFHT’s decision to move away from classical observing prompted the development of a remote observing environment aimed at producing science observations from headquarters facility in Waimea, HI. This remote observing project commonly referred to as the Observatory Automation Project (OAP ) was completed at the end of January 2011 and has been providing the majority of science data ever since. A comprehensive feasibility study was conducted to determine the options available to achieve remote operations of the observatory dome drive system. After evaluation, the best option was to upgrade the original hydraulic system to utilize variable frequency drive (VFD) technology. The project upgraded the hydraulic drive system, which initially utilized a hydraulic power unit and three (3) identical drive units to rotate the dome. The new electric drive system replaced the hydraulic power unit with electric motor controllers, and each drive unit reuses the original drive and swaps one for one the original hydraulic motors with an electric motor. The motor controllers provide status and monitoring parameters for each drive unit which convey the functionality and health of the system. This paper will discuss the design upgrades to the dome drive rotation system, as well as some benefits, control, energy savings, and monitoring.

Paper Details

Date Published: 6 August 2014
PDF: 15 pages
Proc. SPIE 9149, Observatory Operations: Strategies, Processes, and Systems V, 91491J (6 August 2014); doi: 10.1117/12.2055239
Show Author Affiliations
Steven E. Bauman, Canada-France-Hawaii Telescope Corp. (United States)
Bill Cruise, Canada-France-Hawaii Telescope Corp. (United States)
Ivan Look, Canada-France-Hawaii Telescope Corp. (United States)
Grant Matsushige, Canada-France-Hawaii Telescope Corp. (United States)
Larry Roberts, Canada-France-Hawaii Telescope Corp. (United States)
Derrick Salmon, Canada-France-Hawaii Telescope Corp. (United States)
Ralph Taroma, Canada-France-Hawaii Telescope Corp. (United States)
Tom Vermeulen, Canada-France-Hawaii Telescope Corp. (United States)
Krieg Richards, Baldor-Reliance (United States)


Published in SPIE Proceedings Vol. 9149:
Observatory Operations: Strategies, Processes, and Systems V
Alison B. Peck; Chris R. Benn; Robert L. Seaman, Editor(s)

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