Adaptive control for a non-minimum phase hypersonic vehicle model

A non-minimum phase hypersonic vehicle model is used as control model in this paper, simultaneously a new control-oriented model is developed to solve the non-minimum phase problem. By properly neglecting or treating some items as uncertainties, a simpler control-oriented model is presented. In the new control-oriented model, the altitude loop is approximately an integral chain, thus backstepping method can be conveniently used. The uncertainty in the model is estimated by adaptive method and the adaptive law is designed by Lyapunov theory to guarantee the stability of the whole system. The simulation results validate the effectiveness of the methodology and a monte-carlo test is carried to illustrate the robustness of this method.