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Proceedings Paper

Segment handling system prototype progress for Thirty Meter Telescope
Author(s): Satoru Sofuku; Yutaka Ezaki; Noboru Kawaguchi; Toshitaka Nakaoji; Junji Takaki; Yasushi Horiuchi; Yusuke Saruta; Masaki Haruna; Ieyoung Kim; Kazuhiko Fukushima; Yukiyasu Domae; Toshiyuki Hatta; Shinya Yoshitake; Hayato Hoshino
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Paper Abstract

Segment Handling System (SHS) is the subsystem that is planned to be permanently implemented on Thirty Meter Telescope (TMT) telescope structure that enables fast, efficient, semi-automatic exchange of M1 segments. TMT plans challenging segment exchange (10 segments per 10 hours a day). To achieve these, MELCO develops innovative SHS by accommodating Factory Automation (FA) technology such as force control system and machine vision system into the system. Force control system used for install operation, achieves soft handling by detecting force exerted to mirror segment and automatically compensating the position error between handling segments and primary mirror. Machine vision system used for removal operation, achieves semi-automatic positioning between SHS and mirror segments to be handled. Prototype experience proves soft (extraneous force ~300N) and fast (~3 minutes) segment handling. The SHS will provide upcoming segmented large telescopes for cost-efficient, effortless, and safe segment exchange operation.

Paper Details

Date Published: 27 July 2016
PDF: 18 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99062Y (27 July 2016); doi: 10.1117/12.2233856
Show Author Affiliations
Satoru Sofuku, Mitsubishi Electric Corp. (Japan)
Yutaka Ezaki, Mitsubishi Electric Corp. (Japan)
Noboru Kawaguchi, Mitsubishi Electric Corp. (Japan)
Toshitaka Nakaoji, Mitsubishi Electric Corp. (Japan)
Junji Takaki, Mitsubishi Electric Corp. (Japan)
Mitsubishi Electric Corp. (Japan)
Yasushi Horiuchi, Mitsubishi Electric Corp. (Japan)
Mitsubishi Electric Corp. (Japan)
Yusuke Saruta, Mitsubishi Electric Corp. (Japan)
Masaki Haruna, Mitsubishi Electric Corp. (Japan)
Ieyoung Kim, Mitsubishi Electric Corp. (Japan)
Kazuhiko Fukushima, Mitsubishi Electric Corp. (Japan)
Yukiyasu Domae, Mitsubishi Electric Corp. (Japan)
Toshiyuki Hatta, Mitsubishi Electric Corp. (Japan)
Shinya Yoshitake, Mitsubishi Electric Corp. (Japan)
Hayato Hoshino, Mitsubishi Electric Corp. (Japan)

Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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