First-Order Plus Time Delay Model Identification from Relay Feedback: An Embedded True/False Criterion

A. Eisinberg and G. Fedele (Italy)

Keywords

First order plus time delay model, Relay feedback, Least squares method.

Abstract

A simple closed-loop identification method for a first-order plus time delay is proposed. The approach directly ob tains model parameters using a filtered equation and a least-squares method. Implicit in this method is a simple true/false criterion to establish whether the hypothesis on the process type is correct. Using simulations, robustness to acceptable disturbance and measurement noise is inves tigated.

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