Observer design and practical stability of nonlinear systems under unknown time‐delay

What is it about?

In the present paper, we study observer design and we establish some sufficient conditions for practical exponential stability for a class of time‐delay nonlinear systems written in triangular form. In case of delay is assumed to be constant and known, the exponential convergence of the observer was confirmed. Based on the Lyapunov‐Krasovskii functionals, the practical stability of the proposed observer is achieved. Finally, a physical model and simulation findings show the feasibility of the suggested strategy

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