Transactions of the Society of Instrument and Control Engineers
Online ISSN : 1883-8189
Print ISSN : 0453-4654
ISSN-L : 0453-4654
Paper
Data-driven Estimation and Update Rule of Circle Parameters in Nyquist Plots Characterizing a Class of Stabilizing Controllers
Koto ISOSHIMAMasaya TANEMURAYuichi CHIDA
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2023 Volume 59 Issue 5 Pages 243-251

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Abstract

In this paper, we propose a data-driven estimation method of multiple circle parameters which characterize a class of stabilizing controllers in Nyquist plots in a situation where a plant model is unknown. In the previous work, we derived the class of stabilizing controllers with an estimated circle. However, if we can estimate multiple circle parameters, we obtain multiple classes of stabilizing controllers. Therefore, we estimate multiple circle parameters and propose efficient update rules for data-driven methods.

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© 2023 The Society of Instrument and Control Engineers
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