| Project/Area Number |
14J11842
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
邱 惟 東京工業大学, 精密工学研究所, 特別研究員(DC2)
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| Project Period (FY) |
2014-04-25 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2015: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2014: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | ultrasonic motor / lubrication / efficiency / traveling wave / viscosity / torque / optical interferometry / electrorheological fluid / London |
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| Outline of Annual Research Achievements |
I investigated the lubricating effect in traveling-wave type ultrasonic motors. I found that the motor performance in lubricated contact, including efficiency, speed, and torque, was lower than that in dry contact. Further studies showed that bending vibration is easily damped by the presence of lubricant or high preload, resulting in poor motor performance.
I also studied the effect of lubricant viscosity on motor performance. No distinct difference on motor efficiency can be found when the lubricants with different viscosities were used, which indicates that hydrodynamic lubrication did not occur even under low static preload. The results prove that lubricated ultrasonic motors can work in a wide temperature range, because motor performance is not greatly affected by lubricant viscosity.
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| Research Progress Status |
27年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
27年度が最終年度であるため、記入しない。
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