Adaptive Backstepping Sliding Mode Controller Design For Spinning Projectile

The spinning projectile model is highly nonlinear, multivariable strong coupled and parameters uncertain. Considering the uncertain factors of nonlinear control model, an attitude control law is proposed based on backstepping control and sliding mode control theory. The attitude controller is designed based on Lyapunov stability theory, using virtual control volume as the sliding mode. Based on the adaptive method, the uncertain parameters and controller parameters are approximated and the exponential reaching law is used to solve the chattering problem in sliding surface. The simulation results show that, the proposed control law has good stability and robustness and the design of control model and the controller is reasonable and feasible.