Non-linear dynamic analysis of travelling-wave-type ultrasonic motors

Yosuke Nakagawa, Akira Saito, Takashi Maeno

研究成果: Article査読

4 被引用数 (Scopus)


First, transient response of a bar-type ultrasonic motor is measured using laser-doppler velocimeter in order to show the relationship between input parameters and the non- linear dynamic characteristics. Next, dynamical model of ultrasonic motor is constructed. The piezoelectric ceramics and stator's vibration are modeled as a second order system considering non-linear terms at piezoelectric ceramics and elastics of metal part of the stator. At the interface between the rotor and stator, three-dimensional discrete model using springs and dampers at the contact surface is introduced in order to calculate the friction force between them. Coulomb's friction model was introduced considering stick-slip at contact area. As a result, the validity of the mathematical model was confirmed hy showing that simulation results are in good agreement with those obtained by measurement.

ジャーナルNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
出版ステータスPublished - 2007 3月

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 産業および生産工学


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