Permanent magnet synchronous motor servo control system includes three control loops: position, speed and current, however, the traditional control methods still cannot adapt to some occasions, such as, position servo of modern high precision and high frequency response. In this paper, we derived the mathematical model and the coordinate transformation that rely on the analysis of permanent magnet synchronous motor working principle and vector control principle. As for the decoupling problem of current loop based on d, q coordinate, this paper analyzed the vector decoupling control factors and their mutual influence, and then proposed decoupling control method. The paper also optimized the speed loop and position loop by speed loop control method with sliding mode variable structure, while adding feed forward controller for speed loop and achieving quite a comprehensive optimization for the three control loops. Finally, simulation results have verified the high feasibility of the proposed servo control method and strategy.
Optimization of speed loop control technology for permanent magnet synchronous motor servo system*
01.08.2017
652553 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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