Adaptive fault-tolerant attitude control of tailless aircraft based on event-triggered sampling
In view of the attitude tracking control problem of tailless aircraft with limited communication bandwidth,an event-triggered-based adaptive fault-tolerant attitude control method is proposed,in the presence of model uncertainties,external disturbances,and actuator faults.Firstly,a control-oriented attitude control model is established based on the six-degree-of-freedom dynamics and kinematics model of the tailless aircraft.By adopting the event-triggered mechanism,the communication frequency between the controller and the actuator channel is successfully reduced,which relieves the communication burden of the bus and avoids the occurrence of the Zeno phenomenon.Then,the effects of actuator failure and sampling errors caused by the event trigger are successfully compensated by adaptive bounded estimation.Finally,the Lyapunov stability analysis is conducted to demonstrate that the proposed control method ensures the ultimate boundedness of all system signals.Numerical simulation results show that the proposed control method effectively reduces the update frequency of the controller while achieving attitude tracking of the tailless aircraft with respect to control commands.
tailless aircraftattitude trackingevent triggeredadaptive controlfault-tolerant control
万方数据
维普
