Second-Order Predefined-Time Terminal Sliding Mode Control for Speed Regulation System of Permanent Magnet Synchronous Motor

In this paper, a second-order predefined-time terminal sliding mode (SPTSM) is proposed, which is investigated for the practical applications of the speed regulation system of a permanent magnet synchronous motor (PMSM) by using predefined-time stability theory and Lyapunov stability theory. At firs...

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Main Authors: Haibo Xue, Xinghua Liu
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Fractal and Fractional
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Online Access:https://www.mdpi.com/2504-3110/9/3/180
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author Haibo Xue
Xinghua Liu
author_facet Haibo Xue
Xinghua Liu
author_sort Haibo Xue
collection DOAJ
description In this paper, a second-order predefined-time terminal sliding mode (SPTSM) is proposed, which is investigated for the practical applications of the speed regulation system of a permanent magnet synchronous motor (PMSM) by using predefined-time stability theory and Lyapunov stability theory. At first, we propose the SPTSM, which involves the controller’s design by using the novel reaching law with predefined-time terminal sliding mode (PTSM) and the novel sliding mode surface with PTSM. Second, we derive the novel SPTSM controller for the universal second-order nonlinear single-input single-output (SISO) system and the practical applications of the speed regulation system of the PMSM separately. Then, numerical simulation results of the speed regulation system of the PMSM are also included to check the effect of the theoretical results and the corresponding parameters on the convergence rates, so that the results can be guidance for the selection of SPTSM controller parameters. Finally, the dynamic responsiveness and robustness of the system are validated through numerical simulations and experimental results. It has been observed that the robust SPTSM controller, which is designed with the PTSM-PTSM, referring to the sliding mode that involves a reaching law with PTSM and a sliding mode surface with PTSM, exhibits superior performance.
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institution Kabale University
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spelling doaj-art-24e3dfee04e34bb39dd52bb192ef07222025-08-20T03:43:31ZengMDPI AGFractal and Fractional2504-31102025-03-019318010.3390/fractalfract9030180Second-Order Predefined-Time Terminal Sliding Mode Control for Speed Regulation System of Permanent Magnet Synchronous MotorHaibo Xue0Xinghua Liu1School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaIn this paper, a second-order predefined-time terminal sliding mode (SPTSM) is proposed, which is investigated for the practical applications of the speed regulation system of a permanent magnet synchronous motor (PMSM) by using predefined-time stability theory and Lyapunov stability theory. At first, we propose the SPTSM, which involves the controller’s design by using the novel reaching law with predefined-time terminal sliding mode (PTSM) and the novel sliding mode surface with PTSM. Second, we derive the novel SPTSM controller for the universal second-order nonlinear single-input single-output (SISO) system and the practical applications of the speed regulation system of the PMSM separately. Then, numerical simulation results of the speed regulation system of the PMSM are also included to check the effect of the theoretical results and the corresponding parameters on the convergence rates, so that the results can be guidance for the selection of SPTSM controller parameters. Finally, the dynamic responsiveness and robustness of the system are validated through numerical simulations and experimental results. It has been observed that the robust SPTSM controller, which is designed with the PTSM-PTSM, referring to the sliding mode that involves a reaching law with PTSM and a sliding mode surface with PTSM, exhibits superior performance.https://www.mdpi.com/2504-3110/9/3/180permanent magnet synchronous motor (PMSM)predefined-time terminal sliding mode (PTSM)second-order predefined-time terminal sliding mode (SPTSM)speed regulation systemnonlinear system
spellingShingle Haibo Xue
Xinghua Liu
Second-Order Predefined-Time Terminal Sliding Mode Control for Speed Regulation System of Permanent Magnet Synchronous Motor
Fractal and Fractional
permanent magnet synchronous motor (PMSM)
predefined-time terminal sliding mode (PTSM)
second-order predefined-time terminal sliding mode (SPTSM)
speed regulation system
nonlinear system
title Second-Order Predefined-Time Terminal Sliding Mode Control for Speed Regulation System of Permanent Magnet Synchronous Motor
title_full Second-Order Predefined-Time Terminal Sliding Mode Control for Speed Regulation System of Permanent Magnet Synchronous Motor
title_fullStr Second-Order Predefined-Time Terminal Sliding Mode Control for Speed Regulation System of Permanent Magnet Synchronous Motor
title_full_unstemmed Second-Order Predefined-Time Terminal Sliding Mode Control for Speed Regulation System of Permanent Magnet Synchronous Motor
title_short Second-Order Predefined-Time Terminal Sliding Mode Control for Speed Regulation System of Permanent Magnet Synchronous Motor
title_sort second order predefined time terminal sliding mode control for speed regulation system of permanent magnet synchronous motor
topic permanent magnet synchronous motor (PMSM)
predefined-time terminal sliding mode (PTSM)
second-order predefined-time terminal sliding mode (SPTSM)
speed regulation system
nonlinear system
url https://www.mdpi.com/2504-3110/9/3/180
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AT xinghualiu secondorderpredefinedtimeterminalslidingmodecontrolforspeedregulationsystemofpermanentmagnetsynchronousmotor