Speed control of PMSM based predictive compensation Optimum Gray

The present invention relates to a permanent magnet synchronous motor speed controlling method for optimizing the gray compensation based prediction, noise and uncertainty for small perturbations affect the accuracy of the control and the like to bring the rotational speed of the permanent magnet synchronous motor, establish gray gray prediction model system theory, of the speed deviation by the presence of an interference term generated is advanced prediction, be further compensated in real time the actual control process, increasing the speed and robustness of the tracking performance of the permanent magnet synchronous motor. The traditional method of gray inherent defects in terms of selecting the initial value, first proposed a gray prediction model optimized and used to control the rotational speed of the motor. The present invention, by deriving the model gray, gray to give a prediction model optimized, using this model to predict the gray speed deviation future permanent magnet synchronous motor vector control on the basis of, ahead prediction compensation, improve the control precision of motor speed and robustness.