Title :
The analysis of environmental temperature´s effects of ultrasonic motor´s dynamic characteristics
Author :
Chen, Ru-huan ; Chen, Chao ; Yang, Kang
Author_Institution :
Precision Drive Lab., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
Ultrasonic motor is a new type micro motor, with the characteristics of Light weight, low speed, no electromagnetic interference, high torque and fast response, which has broad application prospects In the field of national defense and military and aerospace. Therefore, the study of ultrasonic motor´s performance is very necessary in the high/low temperature environment. This paper analyzed the changes of characteristics of materials and vibration of the stator´s elastic body and the piezoelectric ceramic element in different temperatures. the temperature load on the stator´s Elastic body and its effects on the operating frequency and piezoelectric constant of piezoelectric material were analyzed, which resulted the changes of resonant amplitude and the speed factor of the stator. The high/low environmental experiments of the ultrasonic motor were carried out. Compared to the ultrasonic motor´s performance simulation results, conclusion was drawn: the ambient temperature affects the vibration characteristics of the motor.
Keywords :
micromotors; piezoceramics; ultrasonic motors; vibrations; ambient temperature; electromagnetic interference; environmental temperature effect analysis; micromotor; piezoelectric ceramic element; piezoelectric constant; piezoelectric material; resonant amplitude; speed factor; stator elastic body; ultrasonic motor dynamic characteristics; vibration characteristics; Acoustics; Ceramics; Finite element methods; Stators; Teeth; Temperature; Vibrations; Harmonic analysis; Ultrasonic motor; piezoelectric ceramic; the high/low temperature environmental experiments;
Conference_Titel :
Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2010 Symposium on
Conference_Location :
Xiamen
Print_ISBN :
978-1-4244-9822-2
DOI :
10.1109/SPAWDA.2010.5744313