Speed Control of Segmented PMLSM Based on Improved SMC and Speed Compensation Model

Tong Wen, Biao Xiang, Zhongyi Wang and Silei Zhang
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Tong Wen: Research Institute for Frontier Science, Beihang University, Beijing 100191, China
Biao Xiang: Department of Mechanical Engineering, Hong Kong Polytechnic University, Kowloon 999077, Hong Kong, China
Zhongyi Wang: Research Institute for Frontier Science, Beihang University, Beijing 100191, China
Silei Zhang: Research Institute for Frontier Science, Beihang University, Beijing 100191, China

Energies, 2020, vol. 13, issue 4, 1-16

Abstract: A segmented control model including an improved sliding model control (SMC) and a speed compensation model is applied into the speed control of a segmented permanent magnet linear synchronous motor (PMLSM) to improve the speed precision during the drive process and reduce the speed loss during the switch process. During the drive process of segmented PMLSM, an improved SMC with a disturbance observer (DOB) is used to suppress the speed fluctuation, and a DOB is added to suppress the oscillation caused by the switch part of SMC. During the switch process of a segmented PMLSM, a speed compensation model based on the position feedback of permanent magnet (PM) actuator is designed to reduce the speed loss of a segmented PMLSM, so the speed of PM actuator could be kept at the reference speed when the PM actuator absolutely quits the stator windings. Finally, the simulation and experiment are conducted to verify the control performances of proposed control model, the results indicate that the speed fluctuation of PM actuator and the speed loss during the switch process are mitigated. Therefore, this proposed control model could satisfy requirements of high-stability and celerity of segmented PMLSM in a long-distance automatic transportation system.

Keywords: improved sliding mode control; speed compensation; speed fluctuation; segmented permanent magnet linear synchronous motor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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