GMTIFS: Cryogenic rotary mechanisms for the GMT Integral-Field Spectrograph
A representative range of the rotary mechanisms proposed for use in GMTIFS is described. All are driven by cryogenically rated stepper motors. For each mechanism, angular position is measured by means of eddy current sensors arranged to function as a resolver. These measure the linear displacement of a decentered aluminum alloy target in two orthogonal directions, from which angular position is determined as a function of the displacement ratio. Resolver function and performance is described....[Show more]
|Collections||ANU Research Publications|
|Source:||Proceedings of SPIE - The International Society for Optical Engineering|
|Access Rights:||Open Access|
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