Closed loop identification of systems within cascade connected control strategies

Crowe, James and Johnson, Michael A. and Grimble, Michael J.; (2015) Closed loop identification of systems within cascade connected control strategies. In: 2003 European Control Conference (ECC). IEEE, GBR. ISBN 9783952417379 (https://doi.org/10.23919/ECC.2003.7084987)

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Abstract

A brief review of the background to the Phase-Locked Loop (PLL) method of non-parametric system identification is presented. This introduces the idea of performing the non-parametric identification for any point on the frequency response curve of a process. The PLL identification method is then extended to perform the non-parametric identification of the component parts of a cascade connected control system. An advantage of the method is that the non-parametric identification is performed with the cascade control system connected in closed loop. An example demonstrating the identification method is given.

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