Study on Nonlinear Phenomenon of Traveling Wave Ultrasonic Motor Based on the Mechanism of Vibration and Electrical Properties

被引：0
|
作者：
Niu Z. [1 ]
Yan F. [1 ]
Sun Z. [2 ]
Yi X. [1 ]
机构：
[1] College of Mechanical and Electronic Engineering, Northwest Agriculture and Forestry University, Xi'an, 712100, Shaanxi Province
[2] State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, Jiangsu Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2017年 / 37卷 / 16期
基金：
中国博士后科学基金;
关键词：
Arrest; Damping ratio; Forced vibration; Impedance characteristics; Resonance frequency; Traveling wave type ultrasonic motor;
D O I：
10.13334/j.0258-8013.pcsee.161858
中图分类号：
学科分类号：
摘要：
Greater growing demand for ultrasonic motor in aeronautics and astronautics engineering, especially the traveling wave type ultrasonic motor (ultrasonic motor), highlights its nonlinear problems. It is time to provide an appropriate explanation for the ultrasonic motor's sudden stoppage while working with load torque less than the locked torque. This paper analyzed this sudden stoppage phenomenon from vibration characteristics view and electrical properties view respectively, and found that the load torque change would increase or decrease the stator damping and stiffness simultaneously. These two important influences boost or diminish the ultrasonic motor stator's current vibration damping ratio. At the same time, bigger load distinctly decrease the impedance of the ultrasonic motor system, and further amplifying the actual resonance frequency. According to the unchanged driving frequency, sudden stoppage phenomena occurred when the practical motor resonance frequency became from low to high, until it equaled to the driving frequency. All experimental results clearly verify that the real influence factors for ultrasonic motor sudden stoppage are the increasing or decreasing of damping ratio and motor system impedance, led by the load torque changes. © 2017 Chin. Soc. for Elec. Eng.
引用
收藏
页码：4819 / 4825
页数：6
相关论文
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