Adaptive state estimation for a class of uncertain nonlinear systems with output time-delaysReport as inadecuate




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1 L2S - Laboratoire des signaux et systèmes 2 Sys-Com Ecole Nationale d-Ingénieurs de Tunis

Abstract : In this paper, we propose an adaptive observer for nonlinear systems with slope restricted nonlinearities, unknown parameters and delayed outputs. The delay is assumed constant and the unknown parameter is assumed piece-wise constant. Based on the Lyapunov-krasovskii approach, we show that, for sufficiently small values of the time-delay, both state estimation and parametric convergence are ensured under a condition of persistent excitation. The result is illustrated via two numerical examples.





Author: Habib Dimassi - Antonio Loria - Safya Belghith -

Source: https://hal.archives-ouvertes.fr/



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