Title :
New control method of ultrasonic motor-constant current drive and equivalent circuit
Author_Institution :
Tsukuba Univ., Ibaraki, Japan
Abstract :
This report first explains a prototyped constant current control circuit, which has successfully realized constant amplitude of the stator tip while maintaining a state of resonance, and that leads to the experimental results of velocity reduction proportional to the load torque under the constant current drive. Secondly, a new friction model based on these findings is proposed.
Keywords :
constant current sources; equivalent circuits; machine control; stators; ultrasonic motors; US motor; constant amplitude; constant current drive; equivalent circuit; load torque; stator tip; ultrasonic motor control method; velocity reduction; Equivalent circuits; Friction; Mirrors; Phase locked loops; RLC circuits; Resonance; Rotors; Stators; Torque; Voltage;
Conference_Titel :
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN :
0-7803-7631-5
DOI :
10.1109/SICE.2002.1195292
