Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 708-715 |
| Number of pages | 8 |
| Journal | Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C |
| Volume | 73 |
| Issue number | 3 |
| Publication status | Published - 2007 Mar 1 |
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Keywords
- Contact analysis
- Dynamics
- Frictional loss
- Non-linear characteristics
- Stick-slip phenomenon
- Ultrasonic motor
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering