Abstract
A simplified approach to the continuous online tuning of rotor flux feedforward field-oriented induction machine drives is presented. The procedure offers the advantage of not requiring a special test signal or special test conditions. The approach takes advantage of the stator voltage equations which allow robust parameter-insensitive estimation of the electromagnetic torque while operating at nominal speeds for which the stator IR voltage drop is negligible ( approximately=5 Hz and above). This torque computation is independent of the rotor flux field-oriented control. In essence, the approach uses a stator flux controller to detect improper tuning of the feedforward rotor flux controller. The theoretical and practical implementations of such a continuous self-tuning system are presented. Experimental results are based on a rotor flux feedforward field-oriented induction machine servo drive.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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