| Presentation | 2005/9/22 Variation of Bending-Vibrator Characteristics when an Object is brought into Close Proximity with the Vibrator End : Preliminary Study for Proximity Sensors Ken YAMADA, Daisuke YAMAZAKI, Kiyoshi NAKAMURA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Evanescent acoustic fields that decay exponentially from the plate surface can be created in the vicinity of a piezoelectric bending vibrator. When an object is brought into this evanescent field, the electric admittance of the vibrator undergoes some change depending on the vibrator-to-object distance d. The authors' group has found so far that as an object comes into close proximity with the plate end, an unexpected phenomenon occurs such that the Q-factor which once decreased starts to increase in the range where d becomes small. In this study, this unique phenomenon is examined in detail by experiments and some new findings are shown on the variation of bending-vibrator characteristics. Also, theoretical explanations are given to conjecture the mechanism of this phenomenon by using a simple model. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ultrasonic sensor / Proximity sensor / Evanescent wave / Bending vibrator / Acoustic sensor |
| Paper # | US2005-42 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2005/9/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Variation of Bending-Vibrator Characteristics when an Object is brought into Close Proximity with the Vibrator End : Preliminary Study for Proximity Sensors |
| Sub Title (in English) | |
| Keyword(1) | Ultrasonic sensor |
| Keyword(2) | Proximity sensor |
| Keyword(3) | Evanescent wave |
| Keyword(4) | Bending vibrator |
| Keyword(5) | Acoustic sensor |
| 1st Author's Name | Ken YAMADA |
| 1st Author's Affiliation | Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Daisuke YAMAZAKI |
| 2nd Author's Affiliation | Graduate School of Engineering, Tohoku University |
| 3rd Author's Name | Kiyoshi NAKAMURA |
| 3rd Author's Affiliation | Graduate School of Engineering, Tohoku University |
| Date | 2005/9/22 |
| Paper # | US2005-42 |
| Volume (vol) | vol.105 |
| Number (no) | 312 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |