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1. 10. 2012.
Closed-loop frequency-based identification method for Wiener type plants with a transport delay using a relay feedback
This paper proposes a closed-loop frequency-based method for parametric identification of Wiener type plants with a transport delay in the linear part using a relay feedback. The method is a generalization of Ziegler Nichols' (ZN) experiment, with relay added in the control loop. It provides a simultaneous estimation of the linear plant dynamic, value of the time delay and approximate model of the input-output characteristic of the nonlinear part.