Guidance law design based on adaptive backstepping sliding mode control

Based on backstepping design,adaptive control and sliding mode control,a new adaptive backstepping sliding mode controller was designed for the case of a three-dimensional interception.To confirm the upper bound of uncertainties in sliding-mode control system,considering the maneuvering acceleration of targets as a disturbance.An adaptive law was designed to estimate the value of upper bound in real-time,and its stability and error convergence were testified based on the Lyapunov theorem.Simulation results show that the adaptive backstepping sliding mode law is effective.