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- Title
基于三阶超螺旋扰动观测器的 PMLSM 全局自适应 滑模控制.
- Authors
张艳; 王丽梅; 方馨
- Abstract
Aiming at the problem that the position tracking accuracy of permanent magnet linear synchronous motor is easily affected by uncertain factors such as external disturbance and parameter change, a compound control strategy combining global adaptive sliding mode controller and three-order super-twisting disturbance observer was proposed. Firstly, in order to solve the chattering problem of global sliding mode control, the global adaptive sliding mode controller was designed according to the adaptive reaching law. The adaptive approach law can adjust the switching gain in real time according to the changing process of the system state variables, so as to improve the response speed of the system and reduce chattering. Then, in order to improve the tracking accuracy and anti-interference ability of the system, a three order super-twisting disturbance observer was designed to observe the disturbance and uncertainty that cannot be accurately measured in the system and realize the feedforward compensation of the system. Finally, simulation and experimental verification were carried out. The simulation and experimental results show that compared with global sliding mode control, the proposed method can effectively improve the response speed and tracking accuracy of the system, and make the system have good steady-state and dynamic performance.
- Subjects
SLIDING mode control; SYNCHRONOUS electric motors; PERMANENT magnets; PROBLEM solving; SPEED
- Publication
Electric Machines & Control / Dianji Yu Kongzhi Xuebao, 2024, Vol 28, Issue 6, p76
- ISSN
1007-449X
- Publication type
Article
- DOI
10.15938/j.emc.2024.06.008