Wind disturbance cancellation for smaller alt-azimuth telescopes

Creative Commons License

Unal A. C., Kararsız G., Yilmaz C. T., Keskin O., YEŞİLYAPRAK C.

6th Workshop on Robotic Autonomous Observatories, RMxAC 2021, Mazagon, Huelva, İspanya, 30 Eylül - 04 Ekim 2019, cilt.53, ss.29-34 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 53
  • Doi Numarası: 10.22201/ia.14052059p.2021.53.07
  • Basıldığı Şehir: Mazagon, Huelva
  • Basıldığı Ülke: İspanya
  • Sayfa Sayıları: ss.29-34
  • Anahtar Kelimeler: Atmospheric effects, Instrumentation: Adaptive optics
  • Atatürk Üniversitesi Adresli: Evet

Özet

© 2021: Instituto de Astronomía, Universidad Nacional Autónoma de México.This study focuses on eliminating unknown amplitude wind disturbance for 2-DOF alt-azimuth configuration small telescopes. An adaptive controller is designed to overcome wind disturbance as a set and forget system. The mathematical model is derived based on 2-DOF alt-azimuth configuration. The wind disturbance is modeled as a sum of sinusoidal with unknown amplitude, frequency and phase by using Wind-Gust model. The controller aims to cancel the effect of the disturbance on the altitude and azimuth angles of the telescope while positioning or staying static on a dedicated configuration. The asymptotic stability is proven with the Lyapunov approach. The numerical study is illustrated to success of the proposed controller.