Adaptive Fuzzy Backstepping Control of Fractional-Order Chaotic System Synchronization Using Event-Triggered Mechanism and Disturbance Observer

The synchronization of fractional-order chaotic systems is investigated using command-filtered adaptive fuzzy control with a disturbance observer, where an event-triggered mechanism and backstepping control technique are employed. In order to relieve the pressure of the continuous update of the cont...

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Main Authors: Zhiye Bai, Shenggang Li, Heng Liu, Xiulan Zhang
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Fractal and Fractional
Subjects:
Online Access:https://www.mdpi.com/2504-3110/6/12/714
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author Zhiye Bai
Shenggang Li
Heng Liu
Xiulan Zhang
author_facet Zhiye Bai
Shenggang Li
Heng Liu
Xiulan Zhang
author_sort Zhiye Bai
collection DOAJ
description The synchronization of fractional-order chaotic systems is investigated using command-filtered adaptive fuzzy control with a disturbance observer, where an event-triggered mechanism and backstepping control technique are employed. In order to relieve the pressure of the continuous update of the controller and improve the resource utilization, an event-triggered control strategy is constructed to reduce the amount of communication for the actuator. Under the framework of adaptive fuzzy backstepping recursive design, fuzzy logical systems and disturbance observers are proposed to estimate the unknown parametric uncertainties and external disturbances, respectively. Moreover, a tracking differentiator is introduced to eliminate the drawback of the explosion of complexity in traditional backstepping. By applying the fractional-order stability theory, all closed-loop signals are bounded and chaos synchronization is achieved. Finally, a simulation example is provided to confirm the effectiveness of the designed method.
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spelling doaj.art-835d33b808a04e41a4f32dfcd6e060b72023-11-24T14:57:24ZengMDPI AGFractal and Fractional2504-31102022-11-0161271410.3390/fractalfract6120714Adaptive Fuzzy Backstepping Control of Fractional-Order Chaotic System Synchronization Using Event-Triggered Mechanism and Disturbance ObserverZhiye Bai0Shenggang Li1Heng Liu2Xiulan Zhang3School of Mathematics and Statistics, Shaanxi Normal University, Xi’an 710119, ChinaSchool of Mathematics and Statistics, Shaanxi Normal University, Xi’an 710119, ChinaSchool of Mathematics and Physics, Guangxi Minzu University, Nanning 530006, ChinaSchool of Mathematics and Physics, Guangxi Minzu University, Nanning 530006, ChinaThe synchronization of fractional-order chaotic systems is investigated using command-filtered adaptive fuzzy control with a disturbance observer, where an event-triggered mechanism and backstepping control technique are employed. In order to relieve the pressure of the continuous update of the controller and improve the resource utilization, an event-triggered control strategy is constructed to reduce the amount of communication for the actuator. Under the framework of adaptive fuzzy backstepping recursive design, fuzzy logical systems and disturbance observers are proposed to estimate the unknown parametric uncertainties and external disturbances, respectively. Moreover, a tracking differentiator is introduced to eliminate the drawback of the explosion of complexity in traditional backstepping. By applying the fractional-order stability theory, all closed-loop signals are bounded and chaos synchronization is achieved. Finally, a simulation example is provided to confirm the effectiveness of the designed method.https://www.mdpi.com/2504-3110/6/12/714fractional-order chaotic system synchronizationcommand filterevent-triggered mechanismadaptive fuzzy control
spellingShingle Zhiye Bai
Shenggang Li
Heng Liu
Xiulan Zhang
Adaptive Fuzzy Backstepping Control of Fractional-Order Chaotic System Synchronization Using Event-Triggered Mechanism and Disturbance Observer
Fractal and Fractional
fractional-order chaotic system synchronization
command filter
event-triggered mechanism
adaptive fuzzy control
title Adaptive Fuzzy Backstepping Control of Fractional-Order Chaotic System Synchronization Using Event-Triggered Mechanism and Disturbance Observer
title_full Adaptive Fuzzy Backstepping Control of Fractional-Order Chaotic System Synchronization Using Event-Triggered Mechanism and Disturbance Observer
title_fullStr Adaptive Fuzzy Backstepping Control of Fractional-Order Chaotic System Synchronization Using Event-Triggered Mechanism and Disturbance Observer
title_full_unstemmed Adaptive Fuzzy Backstepping Control of Fractional-Order Chaotic System Synchronization Using Event-Triggered Mechanism and Disturbance Observer
title_short Adaptive Fuzzy Backstepping Control of Fractional-Order Chaotic System Synchronization Using Event-Triggered Mechanism and Disturbance Observer
title_sort adaptive fuzzy backstepping control of fractional order chaotic system synchronization using event triggered mechanism and disturbance observer
topic fractional-order chaotic system synchronization
command filter
event-triggered mechanism
adaptive fuzzy control
url https://www.mdpi.com/2504-3110/6/12/714
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AT hengliu adaptivefuzzybacksteppingcontroloffractionalorderchaoticsystemsynchronizationusingeventtriggeredmechanismanddisturbanceobserver
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