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Speed sensorless control of a bearingless induction motor based on sliding mode observer with improved double power reaching law.

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Title: Speed sensorless control of a bearingless induction motor based on sliding mode observer with improved double power reaching law.
Authors: Su, Yanlong1 (AUTHOR), Yang, Zebin1 (AUTHOR) zbyang@ujs.edu.cn, Sun, Xiaodong2 (AUTHOR), Pan, Wei1 (AUTHOR) 1000002634@ujs.edu.cn
Source: International Journal of Electronics. Feb2026, Vol. 113 Issue 2, p349-365. 17p.
Subjects: Sensorless control systems, Adaptive control systems, Magnetic suspension, Observability (Control theory), Lyapunov functions
Abstract: To improve the slow convergence speed and chattering phenomenon in the traditional sliding mode observer (SMO), a speed sensorless control strategy of a bearingless induction motor (BIM) based on SMO with improved double power reaching law (IDPRL) is proposed. First, the stator current error is selected as the sliding surface, and SMO for the stator current and rotor magnetic flux are constructed. Second, based on the analysis of traditional reaching laws, an IDPRL is designed. To realise the adaptive control of the system state and reduce chattering and convergence time, the state variable is introduced into the IDPRL. Third, the stability of the proposed reaching law is proved by Lyapunov's theorem, and a speed adaptive observer is constructed based on the coupling terms to achieve accurate observation of the motor speed. Finally, simulations are conducted on the Matlab/Simulink platform, and experimental validation is performed on a prototype. The results show that the proposed speed sensorless control strategy not only improves the accuracy of the speed estimation but also reduces the chattering and convergence time, as well as has good suspension performance. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Electronics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 190668112
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  Data: Speed sensorless control of a bearingless induction motor based on sliding mode observer with improved double power reaching law.
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  Data: <searchLink fieldCode="AR" term="%22Su%2C+Yanlong%22">Su, Yanlong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Zebin%22">Yang, Zebin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zbyang@ujs.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Sun%2C+Xiaodong%22">Sun, Xiaodong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pan%2C+Wei%22">Pan, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 1000002634@ujs.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Electronics%22">International Journal of Electronics</searchLink>. Feb2026, Vol. 113 Issue 2, p349-365. 17p.
– Name: Subject
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  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Sensorless+control+systems%22">Sensorless control systems</searchLink><br /><searchLink fieldCode="DE" term="%22Adaptive+control+systems%22">Adaptive control systems</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+suspension%22">Magnetic suspension</searchLink><br /><searchLink fieldCode="DE" term="%22Observability+%28Control+theory%29%22">Observability (Control theory)</searchLink><br /><searchLink fieldCode="DE" term="%22Lyapunov+functions%22">Lyapunov functions</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To improve the slow convergence speed and chattering phenomenon in the traditional sliding mode observer (SMO), a speed sensorless control strategy of a bearingless induction motor (BIM) based on SMO with improved double power reaching law (IDPRL) is proposed. First, the stator current error is selected as the sliding surface, and SMO for the stator current and rotor magnetic flux are constructed. Second, based on the analysis of traditional reaching laws, an IDPRL is designed. To realise the adaptive control of the system state and reduce chattering and convergence time, the state variable is introduced into the IDPRL. Third, the stability of the proposed reaching law is proved by Lyapunov's theorem, and a speed adaptive observer is constructed based on the coupling terms to achieve accurate observation of the motor speed. Finally, simulations are conducted on the Matlab/Simulink platform, and experimental validation is performed on a prototype. The results show that the proposed speed sensorless control strategy not only improves the accuracy of the speed estimation but also reduces the chattering and convergence time, as well as has good suspension performance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Electronics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/00207217.2025.2501296
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 17
        StartPage: 349
    Subjects:
      – SubjectFull: Sensorless control systems
        Type: general
      – SubjectFull: Adaptive control systems
        Type: general
      – SubjectFull: Magnetic suspension
        Type: general
      – SubjectFull: Observability (Control theory)
        Type: general
      – SubjectFull: Lyapunov functions
        Type: general
    Titles:
      – TitleFull: Speed sensorless control of a bearingless induction motor based on sliding mode observer with improved double power reaching law.
        Type: main
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          Name:
            NameFull: Su, Yanlong
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            NameFull: Yang, Zebin
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            NameFull: Sun, Xiaodong
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            NameFull: Pan, Wei
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          Dates:
            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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              Value: 113
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              Value: 2
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            – TitleFull: International Journal of Electronics
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