In order to solve the uncertainty problem caused by parameter variations and external disturbances, a linear/nonlinear switching active disturbance rejection control method based on adaptive synchronous switching is proposed for hypersonic vehicles. Firstly, the hypersonic vehicle model is decomposed into velocity subsystem and altitude subsystem for designing the controller. Secondly, the bas function is used instead of fal function to improve the control performance of nonlinear active disturbance rejection control. Then, the neural network is used to realize the adaptability of the switching conditions. Finally, the real-time control coefficient and soft switching mode are applied to the design of linear/nonlinear switching state error feedback laws, so as to improve the control accuracy of the system and prevent the jitter problem caused by direct switching of the controllers. The simulation results show that the designed linear/nonlinear switching active disturbance rejection control has better stability and stronger anti-disturbance ability than the linear or nonlinear active disturbance rejection control.
Switching Active Disturbance Rejection Tracking Control of Hypersonic Vehicles
21.07.2024
710349 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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