REAL-TIME CONTROLLED ARBITRARY EXCITATION FOR IDENTIFICATION OF ELECTROMAGNETIC PROPERTIES OF NONORIENTED STEEL

In this work. a measuring station for tearing laminated electrical ste el under arbitrary excitation conditions is presented. Different contr ol strategies for enforcing an arbitrary induction waveform are tested and compared. A classical PID control scheme can be used to minimise the error. A PID controller however, requires fine tuning of its param eters, depending on the measurement conditions. Extending the controll er with a more sophisticated decision making process yields better mat erial independence and better measurement condition independence of th e flux control.