2009 Fiscal Year Final Research Report
Development of High-Torque Ultrasonic Motor Using Complex Vibration
| Project/Area Number |
20760176
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Intelligent mechanics/Mechanical systems
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| Research Institution | Tokuyama College of Technology |
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Principal Investigator |
SUZUKI Atsuyuki Tokuyama College of Technology, 機械電気工学科, 助教 (40450142)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 超音波 / 超音波モータ / 強力超音波 / 負荷特性 / 振動特性 / 高トルク |
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| Research Abstract |
Ultrasonic motors have unique characteristics such as high torque at low speed, high holding torque, and silent motion. However, their applications are limited to certain mechanisms, e.g., autofocus mechanisms of cameras. It is difficult for practical ultrasonic motors to generate higher torque because they are fragile. A bolt-clamped Langevin-type longitudinal vibration transducer (BLT) is a transducer which satisfies high strength and large amplitude. A new standing-wave-type ultrasonic motor that incorporates BLTs was devised. Three BLTs are installed in the shape of a screw. The vibration and load characteristics of the screw-shaped ultrasonic motor were studied. The maximum torque, revolution speed, and efficiency of the ultrasonic motor were 0.67 Nm, 582 rpm, and 7.63%, respectively.
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