Observer-less Fixed-Time Speed Control For Permanent Magnet Synchronous Motors with matched-mismatched disturbances

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dc.contributor.authorCholahan, Varin
dc.contributor.authorWongvanich, Napasool
dc.contributor.authorTangsrirat, Worapong
dc.date.accessioned2026-08-06T10:49:52Z
dc.date.available2026-08-06T10:49:52Z
dc.date.issued2025-01-01
dc.description.abstractThis paper presents a state-dependent Variable Exponent Coefficient Sliding Mode Control (VECFSMC) By inducing fixed-time stability analysis, the proposed state-dependent sliding surface provides not only system stability but also a quick response in a fixed period of time as well as counteract with matched and mismatched disturbances. The proposed sliding mode control strategy does not use observers to estimate the disturbances. The designed sliding mode surface possesses robustness properties which is sufficient to cope with both matched and mismatch disturbances in a period of fixed time. Firstly, the mathematical model of permanent magnet synchronous motor and the mathematical background of variable exponent coefficient are demonstrated theoretically. Secondly, the state-dependent sliding surface with variable exponent coefficient is designed. The controller that can manipulate both the speed of PMSM and matched-mismatched disturbances is constructed. Lyapunov function is applied to assess the stability of the proposed method. Finally, a numerical simulation with PMSM drive shows fast convergence, good robustness against both matched and mismatched disturbances. The proposed fixed-time controller with this observer-less method offers high efficiency and offers not too complicated control solution comparing to the other fixed-time and finite-time methods with a small number of parameters.
dc.identifier.citationProceedings Ieecon 2025 2025 13th International Electrical Engineering Congress Carbon Neutrality Challenges and Solutions Based on Sustainable Power of Nature, 2025
dc.identifier.doi10.1109/iEECON64081.2025.10987731
dc.identifier.other2-s2.0-105007161926
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/16642
dc.sourceProceedings Ieecon 2025 2025 13th International Electrical Engineering Congress Carbon Neutrality Challenges and Solutions Based on Sustainable Power of Nature
dc.subjectfixed-time state-dependent sliding mode control (FTSMC)
dc.subjectmatched disturbances
dc.subjectmismatched disturbances
dc.subjectnonlinear control
dc.subjectobserver-less
dc.subjectpermanent magnet synchronous motor (PMSM)
dc.titleObserver-less Fixed-Time Speed Control For Permanent Magnet Synchronous Motors with matched-mismatched disturbances
dc.typeConference Paper

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