An observer design procedure for a class of nonlinear time-delay systems
Trinh, Hieu, Aldeen, M. and Nahavandi, Saeid 2004, An observer design procedure for a class of nonlinear time-delay systems, Computers & electrical engineering, vol. 30, no. 1, pp. 61-71, doi: 10.1016/S0045-7906(03)00037-5.
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An observer design procedure for a class of nonlinear time-delay systems
This paper considers a class of uncertain, nonlinear differential state delayed control systems and presents a reduced-order observer design procedure to asymptotically estimate any vector state functionals. The method proposed involves decomposition of the delayed portion of the system into two parts: a matched and mismatched part. Provided that the rank of the mismatched part is less than the number of the outputs, a reduced-order linear functional observer, with any prescribed stability margin, can be constructed by using a simple procedure. A numerical example is given to illustrate the new design procedure and its features.
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