Micro Piezoelectric Motors

Title
Micro Piezoelectric Motors
Authors
윤석진강종윤이원희
Issue Date
2010-10
Publisher
59th ICAT/JTTAS joint international Smart Actuator Symposium
Abstract
Piezoelectric ultrasonic motors are of great interest due to the flexibility of miniaturization in comparison with conventional electromagnetic motors whose efficiency decreases significantly. Electromagnetic motors are an obstacle to such miniaturization because of their complicated structure and high power consumption. Especially in information devices and medical equipments, compact size of these motors makes them find wider application. Moreover, a direct drive and holding torque contribute a smart system that has no reduction gearbox and no brake mechanism. In this presentation, two types of the micro piezoelectric motors will be introduced. One is a multilayer piezoelectric linear actuator for reducing applying voltage. The motor is a travelling wave type and the volume of it 5 2 2 mm3. The other is a high speed piezoelectric rotary motor which is operated by travelling wave. The speed and size of the motor are above 10,000 rpm and 5 5mm2, respectively.
URI
http://pubs.kist.re.kr/handle/201004/39097
Appears in Collections:
KIST Publication > Conference Paper
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