Hierarchical Sliding Mode Control for Elastic Hypersonic Glide Vehicles Based on Moving Horizon Estimation

With the intention of suppressing the aerodynamic/elasticity/control coupling of elastic hypersonic glide vehicles without adding new kinds of sensors and actuators, a kind of hierarchical sliding mode controller based on moving horizon estimation is proposed. In this controller, a kind of moving horizon estimation algorithm is utilized to obtain the full-state information online, based on which the hierarchical sliding mode controller is designed. The hierarchical sliding mode controller based on moving horizon estimation only uses elevator deflection to control the attitude and attenuate the elastic vibration simultaneously. Numerical simulations are carried out to demonstrate that the moving horizon estimation method can provide accurate full state information, and the hierarchical sliding mode control can control the attitude and suppress the elastic vibration simultaneously.