An ultrasonic linear motor using ridge mode traveling waves

Tominaga, M, kaminaga, R, Friend, J, Nakamura, K and Ueha, S 2005, 'An ultrasonic linear motor using ridge mode traveling waves', IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 52, no. 10, pp. 1735-1742.


Document type: Journal Article
Collection: Journal Articles

Title An ultrasonic linear motor using ridge mode traveling waves
Author(s) Tominaga, M
kaminaga, R
Friend, J
Nakamura, K
Ueha, S
Year 2005
Journal name IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Volume number 52
Issue number 10
Start page 1735
End page 1742
Total pages 8
Publisher IEEE
Abstract A new type of ultrasonic linear motor is presented using traveling waves excited along a ridge atop a substrate. The ridge cross section was designed to permit only the fundamental mode to be excited during operation of the motor, with a Langevin transducer used as the source of vibration in this study. The ridge waveguide was first made of lossy media to avoid reflecting vibration energy back toward the vibration source, forming a traveling wave. A 5-mm-wide, 15-mm-tall rectangular acrylic ridge was used to move a slider placed upon it toward the vibration source, in opposition to the direction of the traveling wave transmitted along the waveguide ridge. Using a lowloss 3?6-mm aluminum rectangular ridge combined with a damper clamped onto the far end of the waveguide, similar results were obtained. To obtain bidirectional operation, the damper was replaced with a second Langevin transducer, giving a pair of transducers located perpendicularly to the ends of the ridge and driven with an appropriate phase difference. The moving direction of the slider was reversed by shifting this phase difference by about 180 degrees. With this simple configuration, it may soon be possible to fabricate a linear micromotor system on a silicon substrate or other semiconductor wafer adjacent to other electronic and optoelectronic devices
Subject Acoustics and Acoustical Devices; Waves
DOI - identifier 10.1109/TUFFC.2005.1561627
Copyright notice © 2005 IEEE
ISSN 0885-3010
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