Marchenko, Vladimir; Zaczkiewicz, Zbigniew To the problem of observability for nonlinear systems with time delay. (English) Zbl 1147.93318 Zesz. Nauk. Politech. Bialost., Mat. Fiz. Chem. 20, 55-63 (2000). Summary: Several kinds of observability notions are introduced for nonlinear time-delay systems and comparative analysis of such notions is presented. Sufficient conditions for observability are given. Special attention is paid to the two-dimensional system case. The results obtained are illustrated by examples. MSC: 93B07 Observability 93C10 Nonlinear systems in control theory 93C23 Control/observation systems governed by functional-differential equations PDF BibTeX XML Cite \textit{V. Marchenko} and \textit{Z. Zaczkiewicz}, Zesz. Nauk. Politech. Bialost., Mat. Fiz. Chem. 20, 55--63 (2000; Zbl 1147.93318)