Title :
Ultrasonic actuators using near field acoustic levitation
Author :
Ueha, Sadayuki ; Hashimoto, Yoshiki ; Koike, Yoshikazu
Author_Institution :
Precision & Intelligence Lab., Tokyo Inst. of Technol., Yokohama, Japan
Abstract :
Near-field acoustic levitation, where planar objects 10 kg in weight can levitate stably near the vibrating plate, is successfully applied both to transporting objects and rotating a rotor without contact. A transporting apparatus and an ultrasonic motor have been fabricated and their characteristics measured. The theory of near field acoustic levitation both for a piston-like sound source and a flexural vibration source is also briefly described
Keywords :
acoustic field; actuators; conveyors; radiation pressure; transportation; ultrasonic applications; ultrasonic motors; contactless rotor rotation; flexural vibration source; near field acoustic levitation; piston motion; piston-like sound source; planar objects; radiation pressure; stable levitation; transporting objects; ultrasonic actuators; ultrasonic motor; vibrating plate; Acoustic waves; Air transportation; Frequency; Intelligent actuators; Laboratories; Levitation; Pistons; Rotors; Surface acoustic waves; Vibration measurement;
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location :
Sendai
Print_ISBN :
0-7803-4095-7
DOI :
10.1109/ULTSYM.1998.762235
