Adaptive Anti-saturation Tracking Control with Prescribed Performance for Hypersonic Vehicle

For the hypersonic vehicle with external disturbance, input saturation, model parameter uncertainties and prescribed performance constraint, the tracking control strategy is studied in the thesis. Firstly, a prescribed performance function is introduced into the control design by transforming auxiliary variable errors, which guarantees tracking performance of the control system. On the basis of second-order system model of hypersonic vehicle, an adaptive anti-saturation terminal sliding mode (TSM) controller with prescribed performance is presented by using the adaptive control theory and TSM control. The stability theory of the control law is presented by Lyapunov stability theory and the numerical simulations are conducted to indicate the effectiveness of the proposed control scheme.