A digital position controller of travelling wave ultrasonic motors

@article{Hieu2011ADP,
  title={A digital position controller of travelling wave ultrasonic motors},
  author={Nguyen To Hieu and Shogo Odomari and Kosuke Uchida and Tomonobu Senjyu and Masato Oshiro},
  journal={2011 IEEE Ninth International Conference on Power Electronics and Drive Systems},
  year={2011},
  pages={701-704}
}
Ultrasonic motor offers great advantages for industrial applications due to its excellent intrinsic properties. However, when load torque is applied, a dead-zone occurs in the control input. Therefore, a digital controller is adopted for ultrasonic motor. The state quantities, such as acceleration, speed and position, are needed to apply the digital… CONTINUE READING