On the robustness of a nonlinear flat control

In this paper is studied the robustness of a flat control. The DC-to-DC boost converter, largely studied in flat control theory, is used to show the low robustness of such kind of control when the system is subjected to parameter uncertainties. Two solutions are proposed to ameliorate the global robustness of the control. They are based on the addition of a linear controller on the nominal at controller.