Reconfigurable control of flexible joint robot with actuator fault and uncertainty Article Swipe

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Aymen Elghoul , Adel Tellili , Mohamed Naceur Abdelkrim ·

YOU? · · 2019 · Open Access · · DOI: https://doi.org/10.2478/jee-2019-0019

This paper presents the fault tolerant control (FTC) of a flexible joint robot using singular perturbation method in order to compensate for the lost performance due to the occurrence of actuator fault and the uncertainty. This FTC is based on Lyapunov redesign principle. The singular perturbation method is used to reduce the dynamic model of the flexible joint robot in a fast and slow subsystem. The time scale reduction of the flexible joint model is carried out when their joint stiffness is large enough and the singular perturbation parameter is set to zero. The fault-tolerant control structure in this paper is based on two parts. The first term described the composite control for the system without defect and without uncertainty which represents the sum between slow and fast controllers. While the second term of the fault tolerant command describes additive control designed to compensate for the fault effect of the actuator on the uncertain system. The additive approach is based on the Lyapunov theorem, which guarantees asymptotic stability despite the presence of actuator defects and the parametric uncertainty. The theoretical results are applied on a robot manipulator with a single flexible joint.

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Control theory (sociology) Actuator Singular perturbation Joint stiffness Lyapunov function Robot Parametric statistics Fault tolerance Perturbation (astronomy) Computer science Control engineering Lyapunov stability Engineering Stiffness Mathematics Control (management) Artificial intelligence Structural engineering Physics Statistics Distributed computing Nonlinear system Quantum mechanics Mathematical analysis

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Type: article
Language: en
Landing Page: https://doi.org/10.2478/jee-2019-0019
PDF: https://content.sciendo.com/downloadpdf/journals/jee/70/2/article-p130.pdf
OA Status: diamond
Cited By: 10
References: 37
Related Works: 10
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DOI: https://doi.org/10.2478/jee-2019-0019

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Title: Reconfigurable control of flexible joint robot with actuator fault and uncertainty

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Language: en

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Publication year: 2019

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Publication date: 2019-04-01

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Authors: Aymen Elghoul, Adel Tellili, Mohamed Naceur Abdelkrim

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Landing page: https://doi.org/10.2478/jee-2019-0019

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Concepts: Control theory (sociology), Actuator, Singular perturbation, Joint stiffness, Lyapunov function, Robot, Parametric statistics, Fault tolerance, Perturbation (astronomy), Computer science, Control engineering, Lyapunov stability, Engineering, Stiffness, Mathematics, Control (management), Artificial intelligence, Structural engineering, Physics, Statistics, Distributed computing, Nonlinear system, Quantum mechanics, Mathematical analysis

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Cited by: 10

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Citations by year (recent): 2025: 2, 2024: 1, 2023: 1, 2022: 3, 2020: 2

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primary_location.raw_source_name	Journal of Electrical Engineering
primary_location.landing_page_url	https://doi.org/10.2478/jee-2019-0019
publication_date	2019-04-01
publication_year	2019
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