Nonlinear transient response analysis of traveling-wave-type ultrasonic motors

A. Saito, Y. Nakagawa, T. Maeno

研究成果: Conference contribution

抄録

In this paper, nonlinear dynamic response of a traveling wave type ultrasonic motor is investigated. In particular, understanding the transient dynamics of a bar-type ultrasonic motor, such as starting- up and stopping, is of primary interest. First, the transient response of the bar-type ultrasonic motor at starting-up and stopping was measured using Laser Doppler Velocimeter (LDV), and its driving characteristics are discussed in detail. The motor is shown to possess amplitude-dependent nonlinearity that greatly influences the transient dynamics of the motor. Second, a dynamical model of the motor is constructed as a second-order nonlinear oscillator, which represents the dynamics of piezoelectric ceramics, stator, and rotor. The model features nonlinearities caused by the frictional interface between the stator and the rotor, and cubic nonlinearity in the dynamics of the stator. Coulomb's friction model is employed for the interface model and stick-slip phenomenon is considered. Lastly, it is shown that the model is capable of representing the transient dynamics of the motor accurately. The critical parameters in the model are identified from measured results, and numerical simulations are conducted using the model with the identified parameters. Good agreement between the results of measurements and numerical simulations is observed.

本文言語English
ホスト出版物のタイトル17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008
DOI
出版ステータスPublished - 2008
イベント17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008 - Santa Fe, NM, United States
継続期間: 2008 2 232008 2 28

出版物シリーズ

名前IEEE International Symposium on Applications of Ferroelectrics
2

Other

Other17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008
国/地域United States
CitySanta Fe, NM
Period08/2/2308/2/28

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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