Hamza, YounesBoushaki, Razika (Supervisor)2022-05-252022-05-252018https://dspace.univ-boumerdes.dz/handle/123456789/868352 p.This work deals with the study of the stabilization process of a nonlinear control system taking a certain model and derive state space equations through implementation of kinetic and dynamic equations where we present a challenging tool known as backstepping controllers based on Energy functions concept as presented by the famous Russian mathematician Lyaponuv. Simulation of the obtained results is done with Simulink.enDC motorsQuadcopter : Introduction : GeneralitiesAltitude backstepping control of quadcopterThesis