Position Control of Electro‐Hydraulic Actuator System With Disturbances Compensation.

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Title: Position Control of Electro‐Hydraulic Actuator System With Disturbances Compensation.
Authors: Wang, Yunfei1,2,3 (AUTHOR), Ding, Haigang3 (AUTHOR) haierdhg@126.com, Man, Jiaxiang4 (AUTHOR)
Source: Energy Science & Engineering. Feb2026, Vol. 14 Issue 2, p831-842. 12p.
Subject Terms: *Sliding mode control, *Tracking control systems, *Observability (Control theory), *Actuators, *Nonlinear control theory, *Lyapunov stability
Abstract: This paper proposes a new output feedback controller based on global fast terminal sliding mode with disturbances rejection to achieve accurate position tracking control for electro‐hydraulic cylinder system. The typical mathematical model of the asymmetric cylinder electro‐hydraulic system is established as Brunovsky form. Then high‐order sliding mode observer is designed to estimate system states with only available displacement signal, and nonlinear disturbance observer is introduced to estimate and compensate for lumped disturbances including external disturbances, modeling errors and parameter uncertainties. Besides, a global fast terminal sliding mode control method is proposed to improve system convergence speed and position tracking accuracy, whose stability is proved through Lyapunov theory. Furthermore, simulations are carried out to verify the estimation performance of the designed state observer and disturbance observer, and the estimation accuracy of the disturbance observer reaches 82.71%. Finally, an asymmetric cylinder test rig is constructed and the experimental results show that the tracking accuracy of sinusoidal motion with 100 mm amplitude and step motion with 20 mm amplitude can reach 97.2% and 93.9% respectively compared with the total stroke of the motion, indicating the superiority of the designed output feedback controller. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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DbLabel: Energy & Power Source
An: 191576650
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Position Control of Electro‐Hydraulic Actuator System With Disturbances Compensation.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Yunfei%22">Wang, Yunfei</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ding%2C+Haigang%22">Ding, Haigang</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> haierdhg@126.com</i><br /><searchLink fieldCode="AR" term="%22Man%2C+Jiaxiang%22">Man, Jiaxiang</searchLink><relatesTo>4</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Energy+Science+%26+Engineering%22">Energy Science & Engineering</searchLink>. Feb2026, Vol. 14 Issue 2, p831-842. 12p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Sliding+mode+control%22">Sliding mode control</searchLink><br />*<searchLink fieldCode="DE" term="%22Tracking+control+systems%22">Tracking control systems</searchLink><br />*<searchLink fieldCode="DE" term="%22Observability+%28Control+theory%29%22">Observability (Control theory)</searchLink><br />*<searchLink fieldCode="DE" term="%22Actuators%22">Actuators</searchLink><br />*<searchLink fieldCode="DE" term="%22Nonlinear+control+theory%22">Nonlinear control theory</searchLink><br />*<searchLink fieldCode="DE" term="%22Lyapunov+stability%22">Lyapunov stability</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This paper proposes a new output feedback controller based on global fast terminal sliding mode with disturbances rejection to achieve accurate position tracking control for electro‐hydraulic cylinder system. The typical mathematical model of the asymmetric cylinder electro‐hydraulic system is established as Brunovsky form. Then high‐order sliding mode observer is designed to estimate system states with only available displacement signal, and nonlinear disturbance observer is introduced to estimate and compensate for lumped disturbances including external disturbances, modeling errors and parameter uncertainties. Besides, a global fast terminal sliding mode control method is proposed to improve system convergence speed and position tracking accuracy, whose stability is proved through Lyapunov theory. Furthermore, simulations are carried out to verify the estimation performance of the designed state observer and disturbance observer, and the estimation accuracy of the disturbance observer reaches 82.71%. Finally, an asymmetric cylinder test rig is constructed and the experimental results show that the tracking accuracy of sinusoidal motion with 100 mm amplitude and step motion with 20 mm amplitude can reach 97.2% and 93.9% respectively compared with the total stroke of the motion, indicating the superiority of the designed output feedback controller. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1002/ese3.70384
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 831
    Subjects:
      – SubjectFull: Sliding mode control
        Type: general
      – SubjectFull: Tracking control systems
        Type: general
      – SubjectFull: Observability (Control theory)
        Type: general
      – SubjectFull: Actuators
        Type: general
      – SubjectFull: Nonlinear control theory
        Type: general
      – SubjectFull: Lyapunov stability
        Type: general
    Titles:
      – TitleFull: Position Control of Electro‐Hydraulic Actuator System With Disturbances Compensation.
        Type: main
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            NameFull: Wang, Yunfei
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            NameFull: Ding, Haigang
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            NameFull: Man, Jiaxiang
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 20500505
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            – Type: volume
              Value: 14
            – Type: issue
              Value: 2
          Titles:
            – TitleFull: Energy Science & Engineering
              Type: main
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