Closed-loop frequency-based identification method for Hammerstein type plants with a transport delay using a relay feedback

Author

Juric, Zeljko ; Hanjalic, Selma ; Sehovic, Hamza

Author_Institution

Dept. of Autom. Control & Electron., Univ. of Sarajevo, Sarajevo, Bosnia-Herzegovina

fYear

2013

fDate

Oct. 30 2013-Nov. 1 2013

Firstpage

1

Lastpage

8

Abstract

This paper proposes a new closed-loop frequency based method for parametric identification of Hammerstein type plants with a transport delay. The method is a generalization of Ziegler Nichols´ (ZN) experiment, with relay added in the control loop. It provides a simultaneous estimation of the parametric model of the plant dynamic, value of the time delay and a point by point relationship between input and output of the nonlinear part of the plant, which need not to be symmetrical. No extra equipment is needed, except the relay and a low pass filter.

Keywords

closed loop systems; delays; feedback; identification; low-pass filters; nonlinear systems; relays; Hammerstein type plants; ZN experiment; Ziegler Nichols experiment generalization; closed-loop frequency-based parametric identification method; low pass filter; nonlinear plants; plant dynamic parametric model estimation; relay feedback; time delay; transport delay; Hammerstein; closed-loop; identification; nonlinear; transport delay;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communication and Automation Technologies (ICAT), 2013 XXIV International Symposium on

Conference_Location

Sarajevo

Type

conf

DOI

10.1109/ICAT.2013.6684089

Filename

6684089