Title: An interactive design strategy for fractional order PI controllers in LabVIEW

Authors: Ali Yüce; Furkan Nur Deniz; Nusret Tan; Derek P. Atherton

Addresses: Department of Electrical and Electronics Engineering, Engineering Faculty, Inonu University, 44280, Malatya, Turkey ' Department of Electrical and Electronics Engineering, Engineering Faculty, Inonu University, 44280, Malatya, Turkey ' Department of Electrical and Electronics Engineering, Engineering Faculty, Inonu University, 44280, Malatya, Turkey ' University of Sussex, Richmond Building, Falmer, Brighton BN1 9QT, UK

Abstract: This paper presents an interactive design for fractional order PI (FOPI) controller based on inverse Fourier transform method (IFTM) in accordance with stability region of a closed-loop control system in LabVIEW, which is a powerful graphical program. Stability boundary locus (SBL) method is used to obtain the stability region including all stabilising FOPI controller parameters in (K_p, K_i) plane. The time response of the closed-loop control system with FOPI controller is then obtained by IFTM using the stabilising controller parameters selected from stability region. Changing the selected fractional order controller parameters in stability region, users can observe the step response of the system interactively.

Keywords: fractional order PI controller; inverse Fourier transform method; IFTM; stability boundary locus method; interactive design.

DOI: 10.1504/IJMIC.2018.092121

International Journal of Modelling, Identification and Control, 2018 Vol.29 No.4, pp.304 - 314

Received: 17 Jun 2016
Accepted: 12 Mar 2017
Published online: 04 Jun 2018 *

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