Vibrations modelling at LBTO utilizing telemetry data

María Coronel, Pedro Escárate, Julian C. Christou, John M. Hill, Gustavo Rahmer, Rodrigo Carvajal, Juan C. Agüero

Resultado de la investigación: Contribución a una conferenciaArtículorevisión exhaustiva

1 Cita (Scopus)

Resumen

It is widely accepted that the non-turbulent perturbations in modern telescopes arise from the instrumentation systems, such as fans and cooling pumps, and from the mechanical vibrations induced by the wind or the telescope tracking. In order to develop a properly control law to mitigate the vibrations effects, an accurate model of all the mechanical vibrations is needed. In this paper, we model these vibrations as a sum of continuos-time damped oscillators (the equivalent transfer function of discrete-time autoregressive second-order models) and we estimate the oscillators parameters from discrete-time data based on Maximum Likelihood method. Finally, we utilize our proposed method to estimate the vibrations frequency peaks at the LBTO.

Idioma originalInglés
EstadoPublicada - 2019
Publicado de forma externa
Evento6th International Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2019 - Quebec City, Canadá
Duración: 9 jun. 201914 jun. 2019

Conferencia

Conferencia6th International Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2019
País/TerritorioCanadá
CiudadQuebec City
Período9/06/1914/06/19

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