Differentiator-Based Output-Feedback Controller for Uncertain Nonautonomous Nonlinear Systems With Unknown Relative Degree

Differentiator-Based Output-Feedback Controller for Uncertain Nonautonomous Nonlinear Systems With Unknown Relative Degree

A novel output-feedback controller for uncertain nonautonomous nonlinear systems with unknown relative-degree is proposed in this study. With the assumption that the upper bound of the relative degree is known, the proposed control scheme is designed based on the input filter and higher-order switch...

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Main Authors: Jang-Hyun Park, Seong-Hwan Kim, Tae-Sik Park
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Differentiator-based control
output-feedback
uncertain nonlinear system
unknown relative degree
Online Access:https://ieeexplore.ieee.org/document/9201446/
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spelling doaj-4ae192536d2d43f88e5558c0cd0d7faf2021-03-30T03:58:46ZengIEEEIEEE Access2169-35362020-01-01817259317260010.1109/ACCESS.2020.30255629201446Differentiator-Based Output-Feedback Controller for Uncertain Nonautonomous Nonlinear Systems With Unknown Relative DegreeJang-Hyun Park0https://orcid.org/0000-0002-5331-5108Seong-Hwan Kim1https://orcid.org/0000-0003-1005-1023Tae-Sik Park2https://orcid.org/0000-0003-2372-2332Department of Electrical and Control Engineering, Mokpo National University, Chonnam, South KoreaDepartment of Electrical and Control Engineering, Mokpo National University, Chonnam, South KoreaDepartment of Electrical and Control Engineering, Mokpo National University, Chonnam, South KoreaA novel output-feedback controller for uncertain nonautonomous nonlinear systems with unknown relative-degree is proposed in this study. With the assumption that the upper bound of the relative degree is known, the proposed control scheme is designed based on the input filter and higher-order switching differentiator(HOSD) with over dimension. Using the overestimated time-derivatives of tracking error by HOSD, the proposed controller compensates for the effects of uncertainties including an unknown relative degree in the controlled system. Assuming that the internal zero dynamics, if they exist, are stable, the asymptotic stability of the closed-loop system is guaranteed.https://ieeexplore.ieee.org/document/9201446/Differentiator-based controloutput-feedbackuncertain nonlinear systemunknown relative degree
collection DOAJ
language English
format Article
sources DOAJ
author Jang-Hyun Park
Seong-Hwan Kim
Tae-Sik Park
spellingShingle Jang-Hyun Park
Seong-Hwan Kim
Tae-Sik Park
Differentiator-Based Output-Feedback Controller for Uncertain Nonautonomous Nonlinear Systems With Unknown Relative Degree
IEEE Access
Differentiator-based control
output-feedback
uncertain nonlinear system
unknown relative degree
author_facet Jang-Hyun Park
Seong-Hwan Kim
Tae-Sik Park
author_sort Jang-Hyun Park
title Differentiator-Based Output-Feedback Controller for Uncertain Nonautonomous Nonlinear Systems With Unknown Relative Degree
title_short Differentiator-Based Output-Feedback Controller for Uncertain Nonautonomous Nonlinear Systems With Unknown Relative Degree
title_full Differentiator-Based Output-Feedback Controller for Uncertain Nonautonomous Nonlinear Systems With Unknown Relative Degree
title_fullStr Differentiator-Based Output-Feedback Controller for Uncertain Nonautonomous Nonlinear Systems With Unknown Relative Degree
title_full_unstemmed Differentiator-Based Output-Feedback Controller for Uncertain Nonautonomous Nonlinear Systems With Unknown Relative Degree
title_sort differentiator-based output-feedback controller for uncertain nonautonomous nonlinear systems with unknown relative degree
publisher IEEE
series IEEE Access
issn 2169-3536
publishDate 2020-01-01
description A novel output-feedback controller for uncertain nonautonomous nonlinear systems with unknown relative-degree is proposed in this study. With the assumption that the upper bound of the relative degree is known, the proposed control scheme is designed based on the input filter and higher-order switching differentiator(HOSD) with over dimension. Using the overestimated time-derivatives of tracking error by HOSD, the proposed controller compensates for the effects of uncertainties including an unknown relative degree in the controlled system. Assuming that the internal zero dynamics, if they exist, are stable, the asymptotic stability of the closed-loop system is guaranteed.
topic Differentiator-based control
output-feedback
uncertain nonlinear system
unknown relative degree
url https://ieeexplore.ieee.org/document/9201446/
work_keys_str_mv AT janghyunpark differentiatorbasedoutputfeedbackcontrollerforuncertainnonautonomousnonlinearsystemswithunknownrelativedegree
AT seonghwankim differentiatorbasedoutputfeedbackcontrollerforuncertainnonautonomousnonlinearsystemswithunknownrelativedegree
AT taesikpark differentiatorbasedoutputfeedbackcontrollerforuncertainnonautonomousnonlinearsystemswithunknownrelativedegree
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