Self-regulation control scheme for reusable launch vehicle reentry attitude control

Integrating sliding mode control and nonlinear dynamic inversion technique forms a new robust controller. Using nonlinear extended state observer to build the estimation of system disturbance, and based on the estimation, magnitude of the sliding mode item could be regulated to improve the control effect. Stability of This new controller is analyzed. This new control scheme is used in the reentry attitude control for reusable launch vehicle. Feasibility and validity of the new controller is demonstrated with simulation examples.