Complete model-free siding mode control (CMFSMC)

Complete model-free siding mode control (CMFSMC)

Abstract This study presents a complete model-free sliding mode control (CMFSMC) framework for the control of continuous-time non-affine nonlinear dynamic systems with unknown models. The novelty lies in the introduction of two equalities to assign the derivative of the sliding functions, which gene...

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Autor principal: Quanmin Zhu
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
Materias:
Medicine
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Science
Q
Acceso en línea:https://doaj.org/article/4d23e83c05184929a244f00e7f97bce2
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spelling oai:doaj.org-article:4d23e83c05184929a244f00e7f97bce22021-11-21T12:24:03ZComplete model-free siding mode control (CMFSMC)10.1038/s41598-021-01871-62045-2322https://doaj.org/article/4d23e83c05184929a244f00e7f97bce22021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01871-6https://doaj.org/toc/2045-2322Abstract This study presents a complete model-free sliding mode control (CMFSMC) framework for the control of continuous-time non-affine nonlinear dynamic systems with unknown models. The novelty lies in the introduction of two equalities to assign the derivative of the sliding functions, which generally bridges the designs of those model-based SMC and model-free SMC. The study includes a double SMC (DSMC) design, state observer design, and desired reference state vector design (whole system performance), which all do not require plant nominal models. The preconditions required in the CMFSMC are the plant dynamic order and the boundedness of plant and disturbances. U-model based control (U-control) is incorporated to configure the whole control system, that is (1) taking model-free double SMC as a robust dynamic inverter to cancel simultaneously both nonlinearity and dynamics of the underlying plants, (2) taking a model-free state observer to estimate the state vector, (3) taking invariant controller to specify the whole control system performance in a linear output feedback control and to provide desired reference state vector. The related properties are studied to support the concept/configuration development and the analytical formulations. Simulated case studies demonstrate the developed framework and show off the transparent design procedure for applications and expansions.Quanmin ZhuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Quanmin Zhu
Complete model-free siding mode control (CMFSMC)
description Abstract This study presents a complete model-free sliding mode control (CMFSMC) framework for the control of continuous-time non-affine nonlinear dynamic systems with unknown models. The novelty lies in the introduction of two equalities to assign the derivative of the sliding functions, which generally bridges the designs of those model-based SMC and model-free SMC. The study includes a double SMC (DSMC) design, state observer design, and desired reference state vector design (whole system performance), which all do not require plant nominal models. The preconditions required in the CMFSMC are the plant dynamic order and the boundedness of plant and disturbances. U-model based control (U-control) is incorporated to configure the whole control system, that is (1) taking model-free double SMC as a robust dynamic inverter to cancel simultaneously both nonlinearity and dynamics of the underlying plants, (2) taking a model-free state observer to estimate the state vector, (3) taking invariant controller to specify the whole control system performance in a linear output feedback control and to provide desired reference state vector. The related properties are studied to support the concept/configuration development and the analytical formulations. Simulated case studies demonstrate the developed framework and show off the transparent design procedure for applications and expansions.
format article
author Quanmin Zhu
author_facet Quanmin Zhu
author_sort Quanmin Zhu
title Complete model-free siding mode control (CMFSMC)
title_short Complete model-free siding mode control (CMFSMC)
title_full Complete model-free siding mode control (CMFSMC)
title_fullStr Complete model-free siding mode control (CMFSMC)
title_full_unstemmed Complete model-free siding mode control (CMFSMC)
title_sort complete model-free siding mode control (cmfsmc)
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/4d23e83c05184929a244f00e7f97bce2
work_keys_str_mv AT quanminzhu completemodelfreesidingmodecontrolcmfsmc
_version_ 1718419062225108992

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