Improvement of robustness of vector-controlled induction motors using feedforward and feedback control

The authors propose a combined feedforward and feedback (FF/FB) control to improve robustness of vector-controlled induction motors. This FF/FB system maintains the quick response of the slip-frequency-type and is insensitive to parameter variation in cooperation with field-orientation control. Furthermore, the authors propose a neural network (NNW)-based vector control as a final goal of the FF/FB system.