Paper
1 June 1994 Active-passive correction of wind buffeting deformation on large thin meniscus mirrors
Javier Castro, Brian Mack, Antonio Cruz-Lopez, Juan Paris P. Gonzalez, Carlos Martin-Diaz, German R. Pescador, Luis Fernando Rodriguez-Ramos, Vicente Sanchez de la Rosa, Nicolas A. Sosa, Mark R. Williams
Author Affiliations +
Abstract
This paper presents a solution to correct wind induced deformation on a 8.0 m thin meniscus mirror supported by a system of astatic active supports. The correction scheme is based on an active correction using the force actuators which support the mirror, and a passive rate dependent coupling of the mirror to the cell. The paper identifies the fundamental design parameters of the passive correction system and the active controller, and shows its wind attenuation capabilities. A 3D simulation verifies the good performance of the system for wind velocities of about 45 km/h. Furthermore, the influence of cell deflection on the mirror due to the passive coupling system is shown.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Javier Castro, Brian Mack, Antonio Cruz-Lopez, Juan Paris P. Gonzalez, Carlos Martin-Diaz, German R. Pescador, Luis Fernando Rodriguez-Ramos, Vicente Sanchez de la Rosa, Nicolas A. Sosa, and Mark R. Williams "Active-passive correction of wind buffeting deformation on large thin meniscus mirrors", Proc. SPIE 2199, Advanced Technology Optical Telescopes V, (1 June 1994); https://doi.org/10.1117/12.176175
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KEYWORDS
Mirrors

Actuators

Signal attenuation

Monochromatic aberrations

Distortion

Protactinium

Device simulation

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