Robust and active trajectory tracking for an autonomous helicopter under wind gust

Abstract

The helicopter manoeuvres naturally in an environment where the execution of the task can easily be affected by atmospheric turbulences, which lead to variations of its model parameters.The originality of this work relies on the nature of the disturbances acting on the helicopter and the way to compensate them. Here, a nonlinear simple model with 3-DOF of a helicopter with unknown disturbances is used. Two approaches of robust control are compared via simulations: a nonlinear feedback and an active disturbance rejection control based on a nonlinear extended state observer(ADRC).