High-Order Disturbance Observer-Based Attitude Control with Prescribed Performance for Hypersonic Vehicle

This paper presents a high-order disturbance observer-based attitude tracking controller design with prescribed performance for hypersonic vehicle. The lumped disturbances caused by parameters perturbations, external disturbances and un-modelled dynamics are estimated accurately by utilizing high-order disturbance observers. Based on the disturbances estimation, a composite attitude tracking controller with guaranteeing prescribed transient and steady performance is proposed and the stability analysis of the closed-loop system is rigorously analyzed using the Lyapunov technique. The proposed controller not only ensures the tracking errors are within the desired performance envelope but also considering the disturbance rejection. Finally, the effectiveness of the proposed method is verified by simulations.