Aoun, YacineMedjghou, AliMaaoui, BedreddineSlimane, Noureddine2019-05-232019-05-232018-12-10https://dspace.univ-eloued.dz/handle/123456789/1383International Symposium on Mechatronics and Renewable Energies El-Oued 10- 11 December 2018In this work, a new robust nonlinear controller is presented in presence of large external disturbances for a quadrotor aircraft. The controller is based on an improved sliding mode control. The improvement is done by adding two other terms, one is a backstepping synthesis and the other one is a fuzzy logic term in order to reduce the chattering phenomenon and achieve more acceptable performance. The dynamical motion equations are obtained by Euler-Newton formalism. Lyapunov theorem is used to prove the stability of control system. A simulation is carried out to illustrate the effectiveness of the proposed controlenfuzzy logic system, backstepping techniques, sliding mode control, quadrotorOther