Abstract:A design method for an adaptive sliding mode controller based on the backstepping method is proposed to address the nonlinear issues of aerodynamic coupling and control coupling during the motion of a rotating projectile. The saturation function is used instead of the sign function to weaken the chattering phenomenon, effectively suppressing the influence of aerodynamic parameter perturbations on control quality, enhancing the robustness of the control system, and achieving stable control of the rotating projectile. The stability of the control method was verified using the Lyapunov method, and the effectiveness of the designed method was verified through simulation.