Reduced-order Linear Extended State Observer Based Trajectory Linearization Control for Hypersonic Reentry Vehicle under High Maneuver Flight with Multiple Disturbances

In this paper, attitude tracking problem of hypersonic reentry vehicle (HRV) under high maneuver flight with multiple disturbances is considered. To enhance the anti-disturbance ability of traditional trajectory linearization control (TLC) and retain a simple control structure, a novel reduced-order linear extended state observer (RLESO) based TLC scheme is proposed. The system is divided into attitude loop and angular rate loop. In each loop, nominal control and feedback linearization (FL) control are designed in the framework of TLC. In FL control law design, the lumped disturbance is estimated and compensated by RLESO to counteract the effects of disturbance. Extensive simulations are conducted to verify the efficacy of the proposed RLESO based TLC scheme.