Non-contact transportation using near-field acoustic levitation
Near-field acoustic levitation, where planar objects 10 kg in weight can levitate stably near the vibrating plate, is successfully applied both to non-contact transportation of objects and to a non-contact ultrasonic motor. Transporting apparatuses 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.
Ueha
S
Precision and Intelligence Laboratory, Tokyo Institute of Technology, Yokohama, Japan. sueha@pi.titech.ac.jp
Hashimoto
Y
Koike
Y