DocumentCode :
1808958
Title :
The principle and structure of a screw drive piezoelectric motor
Author :
Yuan, Song-mei ; Zha, Hai-yong ; Chu, Xiang-cheng
Author_Institution :
BHNC-BUAA Lab., Beihang Univ., Beijing, China
fYear :
2009
fDate :
17-20 Dec. 2009
Firstpage :
106
Lastpage :
106
Abstract :
A new structure of piezoelectric motor is studied, which is driven by ultrasonic power. The motor is composed of a threaded nut and screw. The piezoelectric ceramic is pasted to the nut. The nut will vibrate, similarly to the kind of a ¿Hula Hoop motion¿, under the driven of ultrasonic power. Then the vibration becomes a linear motion by the fiction of the screw and the nut. Based on the theory of vibration of cantilever beam, the principle of the motor has been described. It is found that the trajectory of the particle of the nut is an elliptical motion. According to the design, a prototype was fabricated. Experiments show the speed of the motor can reach 3 mm/s.
Keywords :
cantilevers; piezoceramics; ultrasonic motors; cantilever beam; elliptical motion; hula hoop motion; piezoelectric ceramic; piezoelectric motor; screw drive structure; ultrasonic power; Automation; Ceramics; Fasteners; Laboratories; Materials science and technology; Mechanical engineering; Power engineering and energy; Prototypes; Structural beams; Vibrations; Piezoelectric motor; piezoelectric ceramic; screw driven; ultrasonic motor;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) and 2009 China Symposium on Frequency Control Technology, Joint Conference of the 2009 Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4950-7
Type :
conf
DOI :
10.1109/SPAWDA.2009.5428866
Filename :
5428866
Link To Document :
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