Robust Autopilot Design Based on a Disturbance/Uncertainty/Coupling Estimator

Kurkcu B., Kasnakoglu C.

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, cilt.27, sa.6, ss.2622-2629, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27 Sayı: 6
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1109/tcst.2018.2859179
  • Dergi Adı: IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • Sayfa Sayıları: ss.2622-2629
  • Anahtar Kelimeler: Autopilot, disturbance/uncertainty/coupling estimator (DUCE), H-infinity control, robust stability (RS)/robust performance (RP)
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Autopilot failures have caused fatal results for both military and civilian applications, leading to loss of life and property. Major contributing factors are disturbances (e.g., winds), uncertainties (e.g., unmodeled dynamics and parameter variations), and couplings (e.g., a bank maneuver affecting pitch attitude). In this brief, a novel disturbance/uncertainty/coupling estimator structure is introduced for identifying and canceling these effects as a whole. A controller scheme based on the $\mathcal {H}_\infty$ design is implemented with explicit bounds for robust stability and robust performance. Validity of the proposed approach is illustrated under high winds, strong couplings, and large parameter variations.