Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6271e..23e&link_type=abstract
Modeling, Systems Engineering, and Project Management for Astronomy II. Edited by Cullum, Martin J.; Angeli, George Z.. Procee
Astronomy and Astrophysics
Astronomy
Scientific paper
Wind disturbance is an important parameter in the assessment of telescope performance, especially for extremely large telescopes like TMT. In the process of estimating the response of the TMT telescope structure to wind buffeting, we were carrying out measurements on the Keck and Gemini observatories in order to better understand the possible variations in the wind response of these different telescopes. The measurements were used to validate the TMT wind model as well as explaining the mechanism through which the wind disturbances affect the pointing of the elevation axis. We were estimating the wind torque acting on the elevation axis from the measured Disturbance Transfer Function and Position Error of the mount control. Furthermore, the quality of the correlation between wind speed and torque disturbance were investigated to evaluate the feasibility of mitigating the wind disturbance by introducing feed-forward or adaptive control schemes in the mount control.
Angeli George Z.
Erm T. M.
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