Discrete fuzzy high gain observer for a class of nonlinear systems

In order to improve the robustness of the discrete high gain observer with respect to noise measurements and enhance the convergence dynamics, we propose, in this paper, a fuzzy supervision for the observation of a class of nonlinear systems. Actually, a suitable tuning of the observer´s gain is made by a fuzzy supervisor. Simulation results are given in order to show the performances amelioration relatively to the case where the classical discrete high gain observer is applied.