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Updated: Jan 27, 2026

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
Published on: February 13, 2018
Field stabilization control of the European Extremely Large Telescope under wind disturbance
Abstract:
This paper discusses the field stabilization control of the M5 unit under wind disturbances. The first part is a literature survey of the spectral content of the wind disturbance. Next, a simplified model of a tip/tilt mirror control system is used to analyze the conditions for control-structure interaction. The influence of the asymptotic decay rate of the wind tilt disturbance on the magnitude and spectral content of the control torques is pointed out. A full telescope model is developed to justify a decoupled tip/tilt control design and to analyze the response of the primary mirror M1 to the disturbance generated by the control torques of the M5 unit.
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