Analysis and Experimental Study on the Driving Mechanism of Disk Type Acoustic Streaming Ultrasonic Motor

被引：0
|
作者：
Shi M. [1 ]
Chen S. [1 ]
Zhang S. [1 ]
Ma X. [1 ]
Liu F. [1 ]
机构：
[1] School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2024年 / 58卷 / 06期
关键词：
acoustic levitation; acoustic streaming; non-contact levitation; ultrasonic motor;
D O I：
10.7652/xjtuxb202406018
中图分类号：
学科分类号：
摘要：
Aiming at the problem of severe friction and wear between the stator and rotor surfaces of traditional ultrasonic motor causing system performance degradation, a new non-contact levitation acoustic streaming ultrasonic motor is proposed. The proposed motor has a compact structure and uses the acoustic levitation principle to realize non-contact driving of stator and rotor, thus eliminating the friction and serious wear existing in the traditional ultrasonic motor. Based on the continuity equation, the fluid analysis model of levitated interstitial medium is established and solved by finite element method. The rotation characteristic test experiment was carried out on the established test bench. The working mechanism of the new motor was analyzed, and the acoustic streaming distribution under different grooves and operating conditions was studied. The results show that the grooves on the surface of the rotor cause a pressure gradient in the circumferential direction of the gap, which in turn form the torque that drivers the rotor. With the increase of the driving voltage, the amplitude of stator disk vibration and rotor speed both increase. When the driving voltage is 1 430 V, the vibration amplitude of the stator is 9.8 μm, and the rotor speed reaches 74 r·min-1. Compared to smooth rotors, grooved rotors exhibit significant changes in the acoustic streaming field near the groove region. This research can provide reference for the research of non-contact ultrasonic motor, and also can further expand the application field of ultrasonic motor. © 2024 Xi'an Jiaotong University. All rights reserved.
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页码：193 / 202
页数：9
相关论文
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