Adaptive Control Design for Euler–Lagrange Systems Using Fixed-Time Fractional Integral Sliding Mode Scheme

This paper presents an adaptive fixed-time fractional integral control for externally disturbed Euler–Lagrange systems. In the first step of the control design, the approach of fractional-order fixed-time integral nonsingular terminal sliding mode control (FoIFxTSM) is introduced. This scheme combin...

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Main Authors: Saim Ahmed, Ahmad Taher Azar, Mohamed Tounsi, Ibraheem Kasim Ibraheem
Format: Article
Language:English
Published: MDPI AG 2023-09-01
Series:Fractal and Fractional
Subjects:
Online Access:https://www.mdpi.com/2504-3110/7/10/712
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author Saim Ahmed
Ahmad Taher Azar
Mohamed Tounsi
Ibraheem Kasim Ibraheem
author_facet Saim Ahmed
Ahmad Taher Azar
Mohamed Tounsi
Ibraheem Kasim Ibraheem
author_sort Saim Ahmed
collection DOAJ
description This paper presents an adaptive fixed-time fractional integral control for externally disturbed Euler–Lagrange systems. In the first step of the control design, the approach of fractional-order fixed-time integral nonsingular terminal sliding mode control (FoIFxTSM) is introduced. This scheme combines the benefits of fractional calculus with integral sliding mode control, resulting in fast convergence, smooth nonsingular control inputs, and fixed-time stability. By integrating an adaptive scheme, the proposed method is used to control the dynamical system in the presence of uncertainty and external perturbations. The findings of the fixed-time stability using Lyapunov analyses are provided for the closed-loop system. The simulation results are compared with the adaptive fractional-order sliding mode control scheme, and they show the better tracking and convergence performance of the proposed method.
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spelling doaj.art-aa5a9daa77fe4e649cf55f0e8f2eccc22023-11-19T16:34:11ZengMDPI AGFractal and Fractional2504-31102023-09-0171071210.3390/fractalfract7100712Adaptive Control Design for Euler–Lagrange Systems Using Fixed-Time Fractional Integral Sliding Mode SchemeSaim Ahmed0Ahmad Taher Azar1Mohamed Tounsi2Ibraheem Kasim Ibraheem3College of Computer and Information Sciences, Prince Sultan University, Riyadh 11586, Saudi ArabiaCollege of Computer and Information Sciences, Prince Sultan University, Riyadh 11586, Saudi ArabiaCollege of Computer and Information Sciences, Prince Sultan University, Riyadh 11586, Saudi ArabiaDepartment of Computer Techniques Engineering, Al-Rafidain University College, Baghdad 46036, IraqThis paper presents an adaptive fixed-time fractional integral control for externally disturbed Euler–Lagrange systems. In the first step of the control design, the approach of fractional-order fixed-time integral nonsingular terminal sliding mode control (FoIFxTSM) is introduced. This scheme combines the benefits of fractional calculus with integral sliding mode control, resulting in fast convergence, smooth nonsingular control inputs, and fixed-time stability. By integrating an adaptive scheme, the proposed method is used to control the dynamical system in the presence of uncertainty and external perturbations. The findings of the fixed-time stability using Lyapunov analyses are provided for the closed-loop system. The simulation results are compared with the adaptive fractional-order sliding mode control scheme, and they show the better tracking and convergence performance of the proposed method.https://www.mdpi.com/2504-3110/7/10/712adaptive integral sliding mode controlfixed-time convergenceEuler–Lagrange systemfractional-order control
spellingShingle Saim Ahmed
Ahmad Taher Azar
Mohamed Tounsi
Ibraheem Kasim Ibraheem
Adaptive Control Design for Euler–Lagrange Systems Using Fixed-Time Fractional Integral Sliding Mode Scheme
Fractal and Fractional
adaptive integral sliding mode control
fixed-time convergence
Euler–Lagrange system
fractional-order control
title Adaptive Control Design for Euler–Lagrange Systems Using Fixed-Time Fractional Integral Sliding Mode Scheme
title_full Adaptive Control Design for Euler–Lagrange Systems Using Fixed-Time Fractional Integral Sliding Mode Scheme
title_fullStr Adaptive Control Design for Euler–Lagrange Systems Using Fixed-Time Fractional Integral Sliding Mode Scheme
title_full_unstemmed Adaptive Control Design for Euler–Lagrange Systems Using Fixed-Time Fractional Integral Sliding Mode Scheme
title_short Adaptive Control Design for Euler–Lagrange Systems Using Fixed-Time Fractional Integral Sliding Mode Scheme
title_sort adaptive control design for euler lagrange systems using fixed time fractional integral sliding mode scheme
topic adaptive integral sliding mode control
fixed-time convergence
Euler–Lagrange system
fractional-order control
url https://www.mdpi.com/2504-3110/7/10/712
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AT mohamedtounsi adaptivecontroldesignforeulerlagrangesystemsusingfixedtimefractionalintegralslidingmodescheme
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