Autopilot Supported by Nonlinear Model Following Reconfigurable Flight Control System

作者：Zugaj M^*; Narkiewicz J

来源：Journal of Aerospace Engineering, 2010, 23(4): 339-347.

DOI：10.1061/(ASCE)AS.1943-5525.0000050

• Aerospace engineering
• Aircraft
• Control systems
• Transportation safety

The reconfigurable flight control system was developed, applying a nonlinear aircraft model following control algorithm to support the autopilot. The model of a six degrees of freedom airplane with nonlinear aerodynamics and second-order dynamics of control system actuators was supplemented by aircraft autopilot based on classical control laws. The autopilot commands the aircraft in normal operations. In failure cases, the control system reconfiguration is performed using comparison of control external loads on damaged aircraft with loads in undamaged aircraft operation. Fuzzy logic method produces the control signals preventing the consequences of failures. The objective of reconfiguration is to continue the performed flight, including maneuvers, and, if this is not possible, to obtain the steady flight. The aircraft simulation model was tested for consistency with the expected flight performance. The selected autopilot functions were validated and reconfiguration applied in selected cases of failures. The final simulations proved the efficiency of reconfiguration.

• 出版日期2010-10