A novel rotary piezoelectric motor for aerospace application

Author

Xiao-long Lu ; Jun-hui Hu ; Chun-sheng Zhao

Author_Institution

State Key Lab. of Mech. & Control of Mech. Struct., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

fYear

2012

fDate

23-25 Nov. 2012

Firstpage

41

Lastpage

44

Abstract

A novel in-plane mode rotary ultrasonic motor is designed in this paper. Four Langevin type bending vibrators are placed separately around the ring shaped stator and used to excite an in-plane vibration mode of the ring stator. Two tapered rotors are assembled to the inner ring of the stator and clamped together by screw nut. A thin cylindrical supporting is placed under the stator ring, which makes the motor more stable and convenient to fix. This ultrasonic motor has no bearings, which is good at operating in cryogenic and vacuum environment.

Keywords

avionics; bending machines; cryogenics; rotors; stators; ultrasonic motors; vibrations; Langevin type bending vibrators; aerospace application; cryogenic; in-plane mode rotary ultrasonic motor; in-plane vibration mode; ring shaped stator; rotary piezoelectric motor; screw nut; tapered rotors; thin cylindrical; vacuum environment; Acoustics; Prototypes; Rotors; Stators; Transducers; Vibrations; Voltage measurement; In-plane vibration mode; Langevin transducers; No bearing; Ultrasonic motor;

fLanguage

English

Publisher

ieee

Conference_Titel

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2012 Symposium on

Conference_Location

Shanghai

Print_ISBN

978-1-4673-4814-0

Type

conf

DOI

10.1109/SPAWDA.2012.6464031

Filename

6464031