Reduction control of mechanical vibration of an induction motor with fluctuated torque load using repetitive controller

Authors propose a method to reduce the vibration of the V/F controlled induction motor with a fluctuated torque load by repetitive control utilizing acceleration sensor. It is easy to install the acceleration sensor on the motor or load frame. Because the load torque varies periodically, the repetitive control is considered effective for reduction of the vibration. Approximate analysis is performed to study the stability of the repetitive control system. Effectiveness of the proposed method is confirmed by experiments