Design of first- and second-order sliding mode observers for induction motors using a stator-flux model

作者：Rao Sachit^*; Utkin Vadim; Buss Martin

来源：International Journal of Control, 2010, 83(7): 1457-1464.

DOI：10.1080/00207171003793270

• induction motors
• observers
• sliding mode control
• stator-flux model
• super twisting algorithm

We extend current research in the area of 'sensorless' control of induction motors by presenting two observers based on first- and second-order sliding mode control theories for the simultaneous estimation of flux and speed. We base the observers on the stator-flux model of the motor instead of the usual rotor-flux model mainly because of the uncertain rotor resistance that plays a significant role in the latter. By designing the observers as if they are sliding mode controllers, we lend the properties of parameter insensitive closed-loop dynamics and finite time convergence to the stator flux and speed estimation schemes. We also present simulation and experimental results to validate the operation of the observers.

• 出版日期2010