| Title |
A Study on the Revolution Characteristics of the Ultrasonic Motor with Windmill Type Structure |
| Authors |
김진수(Kim, Jin-Su) ; 이덕출(Lee, Deok-Chul) |
| Keywords |
ultrasonic motor ; windmill type ; revolution speed ; elastic body ; 3-dimensional vibration mode |
| Abstract |
In this study, a windmill type ultrasonic motor operated by single-phase AC electric field was fabricated, and then revolution characteristics and 3-dimensional vibration mode of the ultrasonic motor were investigated. Brass metal was pressed with umbrella-type using metal mold, then slot of 4 kind was processed at various thickness. It was found that the revolution speed of the ultrasonic motor increased with decreasing the thickness of elastic body. The revolution speed of the ultrasonic motor increased with increasing the slots of elastic body. When the characteristics was measured, applied voltage was changed from 10V_{max} to 100V_{max}. Then, revolution was began from 30V_{max}, if voltage was applied over 90V_{max} revolution speed was saturated, and not increased. The maximum revolution speed was 510[rpm] when using elastic body with 6 slots and thickness of 0.15mm. And 3-dimensional displacement mode was rotated clockwise direction. |