Nonlinear Dynamic Inversion Control Reinforced with a Second Order Sliding Mode Disturbance Observer for a Fixed-Wing Aircraft System
11th International Conference on Recent Advances in Air and Space Technologies, Conference Program, RAST 2026, İstanbul, Türkiye, 13 - 15 Mayıs 2026, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/rast69551.2026.11672352
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Anahtar Kelimeler: disturbance observer, fault-tolerant control, fixed-wing aircraft, nonlinear dynamic inversion, sliding mode
- İstanbul Gelişim Üniversitesi Adresli: Evet
Özet
Ensuring that an aircraft completes a flight phase under potential fault and unpredictable conditions within a specific flight regime is vital for enhancing operational reliability and performance. Modern aircraft flight control systems ought to guarantee the stability and effectiveness of the vehicle across a wide range of operational and environmental conditions. In this study, a Nonlinear Dynamic Inversion (NDI)-based control enhanced with a disturbance observer is designed for the Boeing 747-200, a wide-body, long-range passenger aircraft. A Second-Order Sliding Mode Disturbance Observer (SOSMDO) is integrated into an NDI control architecture to estimate undesired disturbances affecting the system performance and to minimize their influence on the overall dynamics. Simulation results confirm that the designed architecture effectively preserves stability and reference tracking despite concurrent parametric uncertainties, actuator degradation, and external excitations.