Abstract
Aiming at the problem of poor tracking performance and chattering in track processing of biaxial permanent magnet linear synchronous motor (PMLSM), a cross-coupling control system based on model prediction was designed. First, according to the motion equation of PMLSM, an integrated controller is designed to predict the speed and current. In order to solve the problem that PMLSM is highly dependent on speed sensor, the actual motor model is designed, the adjustable model is designed by estimating the current model, and the model reference adaptive observer is designed. Second, cross-coupling control algorithm was added to the single axis control system of two PMLSM to improve the contour control accuracy and matching degree of the two motors. Finally, the experimental verification is carried out on the two-dimensional <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">XY</i> -axis experimental platform. Experimental results show that this method not only simplifies the structure of the control system, but also has better control effect than the traditional biaxial control structure.
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