Title :
An optimum design for the hybrid transducer ultrasonic motor in symmetrical structure
Author :
Nakamura, Kentaro ; Satonobu, Jun ; Lee, Dongkyon ; Ueha, Sadayuki
Author_Institution :
Precision & Intelligence Lab., Tokyo Inst. of Technol., Yokohama, Japan
fDate :
6/20/1905 12:00:00 AM
Abstract :
This study is focused on the optimization of the longitudinal vibration system for a hybrid transducer ultrasonic motor in order to obtain effective friction control at the rotor/stator contacting interface. The basis of our design is that the piezoelectric elements for the longitudinal vibration are located just at the contacting interface, and the interface is tuned to the nodal plane of the longitudinal vibration mode. A prototype motor 20 mm in diameter achieved the maximum torque of 8 kgf·cm, which was higher than that of other previously reported motors
Keywords :
controllability; friction; machine control; motor drives; optimisation; piezoelectric transducers; torque; ultrasonic motors; 20 mm; effective friction control; frequency response; high controllability; hybrid transducer ultrasonic motor; longitudinal vibration system; nodal plane tuned; optimization; optimum design; piezoelectric elements; prototype motor; rotor/stator contacting interface; symmetrical structure; Control systems; Friction; Prototypes; Rotors; Stators; Stress; Synchronous motors; Torque; Ultrasonic transducers; Vibration control;
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Print_ISBN :
0-7803-4095-7
DOI :
10.1109/ULTSYM.1998.762245
