Title :
Positioning characteristics of ultrasonic rotary actuator with two mode operation
Author :
Umeda, M. ; Nakazawa, T. ; Ohnishi, K. ; Nakamura, K. ; Kurosawa, M. ; Ueha, S.
Author_Institution :
ALPS Electr. Co. Ltd., Nagaoka, Japan
Abstract :
A trial ultrasonic rotary actuator to be applied as a precision positioning controller is presented. Using the actuator, which consists of a longitudinal multilayered piezoelectric actuator (LMPA) and a torsional multilayered piezoelectric actuator (TMPA), the angular positioning characteristics were studied. The actuator is driven by two modes, that is, dynamic and static operations. Employing the two mode operations in a complementary manner, the angular positioning has been successfully proved to be quickly controlled with an excellent accuracy of 1 arcsec ± 0.5 arcsec
Keywords :
electric actuators; piezoelectric devices; position control; angular positioning characteristics; longitudinal multilayered piezoelectric actuator; precision positioning controller; torsional multilayered piezoelectric actuator; two mode operation; ultrasonic rotary actuator; Clocks; Coils; Piezoelectric actuators; Pneumatic actuators; Rotors; Space vector pulse width modulation; Stators; Torque; Ultrasonic transducers; Voltage control;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171552
