Logarithmic Sliding-Mode Observer and Controller for Position Sensorless PMSM Drive

Xuanzhou Shi, Zhiqiang Ma, Hanlin Dong

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Accurate acquisition of rotor position information is vital for sensorless field-oriented control (FOC) of the permanent magnet synchronous motor (PMSM). The sliding-mode observer (SMO) method is widely used in medium- and high-speed motor operations due to its straightforward implementation and robustness. However, the discontinuous control law leads to chattering phenomenon which reduces the accuracy of position estimation. In this paper, the logarithmic sliding-mode (LnSM) observer is proposed for estimating rotor position and the super-twisting algorithm (STA)-based LnSM (STA-LnSM) controller is designed to achieve fast and high-precision tracking of motor speed. Compared with the traditional SMO and PI controller, the proposed strategy significantly eliminates the effect of chattering phenomenon on the accuracy of rotor position estimation and improves the dynamic performance of the system. Finally, the effectiveness and superiority are verified by simulation.

Original languageEnglish
Title of host publication2024 IEEE 3rd Industrial Electronics Society Annual On-Line Conference, ONCON 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331540319
DOIs
StatePublished - 2024
Event3rd IEEE Industrial Electronics Society Annual On-Line Conference, ONCON 2024 - Beijing, China
Duration: 8 Dec 202410 Dec 2024

Publication series

Name2024 IEEE 3rd Industrial Electronics Society Annual On-Line Conference, ONCON 2024

Conference

Conference3rd IEEE Industrial Electronics Society Annual On-Line Conference, ONCON 2024
Country/TerritoryChina
CityBeijing
Period8/12/2410/12/24

Keywords

  • LnSM observer
  • Permanent magnet synchronous motors
  • sensorless control
  • STA-LnSM controller

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