Kybernetika 49 no. 2, 319-340, 2013

Global finite-time observers for a class of nonlinear systems

Yunyan Li, Yanjun Shen and Xiaohua Xia

Abstract:

Global finite-time observers are designed for a class of nonlinear systems with bounded varying rational powers imposed on the increments of the nonlinearities whose solutions exist and are unique for all positive time. The global finite-time observers designed in this paper are with two homogeneous terms. The global finite-time convergence of the observation error system is achieved by combining global asymptotic stability and local finite-time stability.

Keywords:

homogeneity, nonlinear system, global finite-time observer

Classification:

93C10

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