New Gradient Projection Method Realizes Online Tracking of Optimal Trajectory of Permanent Magnet Synchronous Motor
Aiming at the problems of high online computational complexity and heavy computational bur-den in the field weakening control of permanent magnet synchronous motors,this paper proposes an effi-cient field-weakening curve tracking method to realize the motion control of permanent magnet synchronous motors through a more optimized projection.The method combined with iteration realizes online tracking of the optimal operating state of the motor under certain current and voltage constraints.And a simplified method for the ADADELTA gradient descent method is proposed,which optimizes the calculation process of the gradient descent method,reduces the number of iterations,and improves the computing performance.This method avoids algorithm switching in different operating areas,effectively unleashes the potential of the motor and ensures high power output of the motor.Finally,the rationality of this algorithm was verified through the motor towing experiment.
permanent magnet synchronous motorprojected gradient descent methodmaximum torque per ampere controlflux-weakening control
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