Acceleration autopilot design using backstepping adaptive second-order sliding mode for pitch channel Flying object

In this paper, a new autopilot  is designed using backstepping adaptive second-order sliding mode.Autopilot designed is a good result  against uncertainty and perturbations. It also ensures convergence limited time, Reduce chattering, increased control accuracy and the need to derive the sliding surface of the other features of this method of control. One feature of this method is that comparative gains that have poor information uncertainty and uncertainty is implemented. Autopilot designed both the exterior and interior have been included for each section, Designed for each section in a similar way. The simulation results show that the reference signal on autopilot designed with adaptive backstepping second-order- sliding mode using super Twisting  algorithm compared to backstepping, sliding mode first order, adaptive backstepping first-order sliding mode tracking is faster and stronger.