System identification and interval analysis of the Green Bank Telescope structure and servo system

Trupti Ranka; Mario Garcia-Sanz; Timothy L. Weadon; John Ford

doi:10.1117/12.2056370

22 July 2014 System identification and interval analysis of the Green Bank Telescope structure and servo system

Trupti Ranka, Mario Garcia-Sanz, Timothy L. Weadon, John Ford

Proceedings Volume 9145, Ground-based and Airborne Telescopes V; 914554 (2014) https://doi.org/10.1117/12.2056370
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

To conduct astronomical observations during windy days and increase the time available for exploration with the Green Bank Telescope (GBT) it is necessary to reduce the sensitivity of the telescope structure to wind forces. A promising approach is to design an advanced robust control system for wind induced vibration attenuation. As a first step it is necessary to (1) model analytically the structure and the servo system of the telescope and (2) validate the model through systems identification experiments. This paper presents the results of the identification experiments of the structure and the servo system along with the subsequent interval analysis.

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Trupti Ranka, Mario Garcia-Sanz, Timothy L. Weadon, and John Ford "System identification and interval analysis of the Green Bank Telescope structure and servo system", Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 914554 (22 July 2014); https://doi.org/10.1117/12.2056370

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KEYWORDS

Data modeling

Telescopes

Servomechanisms

Solids

System identification

Astronomical telescopes

Computer programming

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