Design of adaptive sliding mode backstepping control for moving mass reentry vehicle

To solve the stability control of moving mass/rudder compound control reentry vehicle, the tri-channel adaptive sliding mode backstepping controller was designed. Based on feedback linearization and backstepping control, the double-loop adaptive sliding mode controller was designed respectively and the virtual control variable was obtained, where the various deviation and interference caused by mass movement were taken as uncertainty with the aerodynamic parameters changes. As the up bound of the uncertainty is unknown, the adaptive algorithm was used to regulate the sliding mode parameters. The stability of the closed-loop system was proved by Lyapunov function. The simulation results show that the controller designed in the paper is effective. The settling time of rolling channel is less than 0.5 s, and the error of overload is less than 0.7%.