A. KAILILT*, N. M R A N I~, M. MLIHA TOUATI~, S. CHOUKRI~ and N. ELALAMI~ Fractional Order Control methods were applied to a three-axis reaction wheels satellite attitude control system. To show the advantages of this method, a comparative study between a Linear Quadratic Regulator and a Fractional Order Control was established through two principal fractional control laws. The aim is to establish an efJicient control law which satisJies a given speczjication and maintains su-cient stability and accuracy even under the strong efects of intrinsic parameters uncertainties, and also external perturbations.

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