A global finite-time observer is designed for nonlinear systems which are uniformly observable and globally Lipschitz. This result is based on a high-gain approach combined with recent advances on finite-time stability using Lyapunov function and homogeneity concepts.

. Fixed-time observer with simple gains for uncertain systems. Automatica, Elsevier, 2017, 81, pp.438 -446. 10.1016/j.automatica.2017 Fixed-time observer with simple gains for uncertain systems AbstractIn this article, we consider the problem of xed-time observer for nonlinear systems, that is a nite-time observer whose settling time can be bounded independently of the initial condition. We consider a large class of nonlinear systems which includes two main classes: linearizable systems up to input-output injection and uniformly observable systems. Furthermore, the eect of noise and uncertainty is analyzed.

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