Abstract: This paper focuses on presenting a novel event-triggered fast finite time sliding mode control for the hypersonic vehi-cle with frequent actuator deflection in the morphing phase. The original model of the hypersonic morphing vehicle is transformed into the control-oriented model, which is employed in the controller design. The fast finite time control theory is adopted to develop the control system for the hypersonic morphing phase. The switching dynamic event-triggering mechanism is introduced to reduce the frequency of actuator deflection. Meanwhile, the possible perfor-mance loss is fully considered in the procedure. The Lyapunov theory is utilized to prove the stability of the closed-loop system and the convergence of the tracking error. Compared with conventional finite-time control method, fast finite-time control enhances the convergence rate when the system states are far from the equilibrium point. Further-more, event-triggering mechanism effectively reduces the frequency of actuating the actuator without obviously per-formance loss. The simulation is designed to verify the effectiveness and the excellent performance of the controller.

Key words: Hypersonic morphing vehicle, Attitude angle control, Finite time control, Sliding mode control, switching event-triggering mechanism, Dynamic event-triggering mechanism