Robust stability analysis of smith predictor based interval fractional-order control systems: A case study in level control process

M Ghorbani, M Tavakoli-Kakhki… - IEEE/CAA Journal of …, 2022 - ieeexplore.ieee.org
The robust stability study of the classic Smith predictor-based control system for uncertain
fractional-order plants with interval time delays and interval coefficients is the emphasis of …

The effects on stability region of the fractional-order PI controller for one-area time-delayed load–frequency control systems

V Çelik, MT Özdemir, G Bayrak - Transactions of the Institute …, 2017 - journals.sagepub.com
One of the controllers used in load–frequency control systems is the PI controller, taking
account of time delay originating from measurement and communication. In control systems …

Switched-delay Smith predictor for the control of plants with response-delay asymmetry

A Baskys - Sensors, 2022 - mdpi.com
The modification of a Smith predictor for the control of plants with response-delay asymmetry
has been proposed. It was developed for application in frequency converters for the control …

An effective Smith predictor based fractional-order PID controller design methodology for preservation of design optimality and robust control performance in practice

FN Deniz - International Journal of Systems Science, 2022 - Taylor & Francis
In this study, an optimal and robust fractional order PID (FOPID) controller design approach
is suggested for Smith predictor based FOPID (SP-FOPID) control system design. This new …

Tuning proportional-integral controllers based on new analytical methods for finding centroid of stability locus for stable/unstable first-order plus dead-time processes

F Alyoussef, I Kaya - … Engineers, Part I: Journal of Systems …, 2022 - journals.sagepub.com
The simplicity of the proportional-integral controller makes it very popular in many practical
engineering applications. In the literature, several approaches have been introduced for …

Performance enhancement of IMC-PID controller design for stable and unstable second-order time delay processes

M Kumar, D Prasad, RS Singh - Journal of Central South University, 2020 - Springer
An IMC-PID controller was proposed for unstable second-order time delay system which
shows the characteristics of inverse response (RHP zero). A plot of M s versus λ was …

A model identification method for tuning of PID controller in a smith predictor structure

FN Deniz, N Tan - IFAC-PapersOnLine, 2016 - Elsevier
In this paper, a model identification method is presented for tuning of PID parameters in
Smith predictor structure based on internal model control. The purposed method fits stability …

PID controller design based on second order model approximation by using stability boundary locus fitting

FN Deniz, BB Alagoz, N Tan - 2015 9th International …, 2015 - ieeexplore.ieee.org
This study presents a model reduction method based on stability boundary locus (SBL)
fitting for PID controller design problems. SBL analysis was commonly applied for controller …

Robust FOPID Stabilization for Smith Predictor Structures

M Ghorbani, A Tepljakov… - 2022 IEEE 61st …, 2022 - ieeexplore.ieee.org
In this letter, an effective graphical tuning method of Fractional-Order Proportional Integral
Derivative (FOPID) controllers is proposed for the Smith Predictor (SP) control structure. At …

Reduced-order observer design with unknown input for fractional order descriptor nonlinear systems

T Zhan, S Ma - Transactions of the Institute of Measurement …, 2019 - journals.sagepub.com
This paper investigates the observer design issues for the quadratic inner-bounded
nonlinear descriptor fractional order systems. Considering the disturbances or inaccessible …