Abstract
This paper presents an application of CRONE control, a robust control design based on fractional order differentiation, to a 2-axis tracking antenna. The controller will regulate the position of the two mechanical axes of the antenna: azimuth and elevation. To design the robust controller, a nonlinear model was developed to estimate the impact of uncertainties and mechanical coupling. A comparison between the CRONE controller and the current PI controller is presented. The experimental validation on the real antenna shows that the CRONE controller has better tracking performances while ensuring a high stability degree.
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