Dynamic Surface Control with High-Order LESO Compensation for Near-Space Vehicle

Aimed at the flight control problem of a near-space vehicle (NSV) with uncertainties such as parameter perturbation and external disturbance, novel dynamic surface (DSC) method high-order linear extended state observer (HLESO) compensation is proposed in this paper. In method, tracking differentiator (TD) based on an inverse hyperbolic sine function firstly designed, convergence TD also analysed Lyapunov stability theory. Furthermore, numerical simulations are detailed to demonstrate superiority compared others. Then, controller traditional backstepping technique where adopted obtain differential signal virtual law, order solve “differential expansion,” HLESO accurately estimate “lumped disturbance” so realize enhance disturbance suppression ability system. The simulation results validity method.