Abahri, FerialHariche, K. (Supervisor)2022-11-172022-11-172016https://dspace.univ-boumerdes.dz/handle/123456789/1043147p.One of the most popular techniques used to design the dynamics of a system is state feedback. In the case of multivariable systems, the feedback gain matrix permitting the assignment of the desired set of closed loop poles is not unique. Helicopters represent a good example of complex multi-input multi-output systems as they are inherently unstable, highly cross-coupled and very non-linear. The objective of this thesis is to compare and evaluate two design methodologies, based on canonical forms: block pole design and pole placement, for the case of a Lynx helicopter model at Hover. The study is conducted through the simulation of large number of possible state feedback gains .The initial condition response of these cases are plotted , the time response characteristics , gain matrices , performance and robustness measures are computed .These results are then compared to select the study cases with the smallest feedback gains and best time response and robustness performances .enBlock pole designPole placementThesis