A model predictive control method is used to replace the PI adjustment part of the current loop and speed loop of the hybrid stepper motor servo control system to solve the problem that the traditional PI adjustment method has poor anti-interference ability.In the velocity loop,the model predictive control obtains the dq axis target current with the smallest velocity error by predicting the next time velocity multiple times.In the current loop,the dq axis voltage with minimum current error is obtained by calculating the working time of 6 groups of effective voltage vectors and applied to the space vector pulse width modulation technique.The simulation on the Matlab/Simulink show that this method can effectively improve the anti-interference of the position servo control system of hybrid stepping motor.
关键词
空间矢量脉宽调制/三矢量模型预测电流控制/最优电压矢量
Key words
space vector pulse width modulation/three-vector model predictive current control/optimal voltage vector
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