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Received: 2006-05-10

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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.5 P.786~792


Novel high torque bearingless two-sided rotary ultrasonic motor

Author(s):  LI Xia, CHEN Wei-shan, XIE Tao, LIU Jun-kao

Affiliation(s):  Department of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China

Corresponding email(s):   jennyhit@163.com

Key Words:  Two-sided, Ultrasonic motor (USM), Piezoelectric motor, Travelling-wave, Bearingless

LI Xia, CHEN Wei-shan, XIE Tao, LIU Jun-kao. Novel high torque bearingless two-sided rotary ultrasonic motor[J]. Journal of Zhejiang University Science A, 2007, 8(5): 786~792.

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T1 - Novel high torque bearingless two-sided rotary ultrasonic motor
A1 - LI Xia
A1 - CHEN Wei-shan
A1 - XIE Tao
A1 - LIU Jun-kao
J0 - Journal of Zhejiang University Science A
VL - 8
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SP - 786
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%@ 1673-565X
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2007.A0786

Applications are limited at present because the currently available ultrasonic motors (USMs) do not provide sufficiently high torque and power. The conventional travelling-wave USM needs the bearing to support, which required lubricant. To solve the above problem, a bearingless travelling-wave USM is designed. First, a novel structure of the two-sided USM consisting of a two-sided teeth stator and two disk-type rotors is designed. And the excitation principle of the two-sided travelling-wave USM is analyzed. Then, using ANSYS software, we set up the model of the stator to predict the excitation frequency and modal response of the stator. The shape of the vibration mode was obtained. Last, the load characteristics of the USM are measured using experimental method. The maximum stall torque and the no-load speed were obtained. The results showed that the characteristics of the two-sided USM are better than those of the conventional one-sided USM.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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