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- Title
Time delay adaptive integral sliding mode control for permanent magnet linear synchronous motor .
- Authors
ZHAO Xi-mei; JI Xiang-chao; WANG Hao-lin
- Abstract
A control scheme combining time-delay control ( TDC) with adaptive integral sliding mode control is proposed to solve the problem that the permanent magnet linear synchronous motor ( PMLSM) servo system is sensitive to uncertainties, such as parameters variation, friction and so on. Firstly, the mathematical model of PMLSM with uncertainties was established. Then, by adding a time delay link in the system, the input signal was delayed by a sampling period, and the TDC was used to eliminate the influence of the uncertainties in the system, but the TDC had poor suppression effect on discontinuous uncertainties, such as friction and so on. So there was a large time delay estimation error during the process of TDC. Therefore, the adaptive integral sliding mode control was used to compensate the error and weak the chattering phenomenon by adjusting the control gain, and the robustness of the system was improved. Finally, the proposed control scheme is proved to be effective and feasible by the system experiment. Compared with TDC, it improves the tracking performance of the system, and improves the robustness of the system obviously.
- Subjects
SLIDING mode control; SYNCHRONOUS electric motors; SERVOMECHANISMS; PERMANENT magnets; TIME delay estimation; TIME delay systems
- Publication
Electric Machines & Control / Dianji Yu Kongzhi Xuebao, 2020, Vol 24, Issue 8, p44
- ISSN
1007-449X
- Publication type
Article
- DOI
10.15938/j.emc.2020.08.006