An Algorithm for Identification of Linear Systems with Varying Time-delay

Abstract This paper treats the problem of on-line identification of systems with varying delay, based on measurements of the input and output signals. A discrete rational delay approximation is used in a process model. The local minima of a specified loss function are analysed and the choice of design variables is discussed. A simulation example of the identification of a system with variable delay is presented. Simulation results indicate that a model that includes a discrete delay approximation can successfully be used for estimation of both time-delay and dynamics of a system.

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