| Presentation | 2000/6/30 H type LiTaO_3 piezoelectric gyroscope for higher sensitivity and stability with a transformer Mitsuharu Chiba, Tetsuya Anbo, Noboru Wakatsuki, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To improve sensitivity and stability, the authors are studying a vibrational H-type gyroscope using a LiTaO_3 single crystal with sharply suppressed leakage output. We have introduced the additional transducer to monitor the driving mode directly and an automatic compensation method for the temperature characteristics of sensitivity and drift. A stray capacitance between a drive electrode and a detection electrode is a disturbance of the compensation. The unnecessary electrostatic coupling is suppressed by using a transformer for a balanced drive. Therefore, the automatic compensation method is acceptable and the drift is suppressed to 9.3% that of a conventional LiTaO_3 gyroscope. As the input impedance of the gyroscope is as large as 400kΩ, the driving voltage can be easily increased by the small transformer. Therefore, the sensitivity is in proportion to the increase of drive voltage. It was experimentally confirmed that the sensitivity of the gyroscope became about 10 times. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LiTaO_3 / H-type resonator / transformer / piezoelectric gyroscope |
| Paper # | US2000-34,EMD2000-30,CPM2000-45,OME2000-40 |
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| Conference Information | |
| Committee | EMD |
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| Conference Date | 2000/6/30(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electromechanical Devices (EMD) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | H type LiTaO_3 piezoelectric gyroscope for higher sensitivity and stability with a transformer |
| Sub Title (in English) | |
| Keyword(1) | LiTaO_3 |
| Keyword(2) | H-type resonator |
| Keyword(3) | transformer |
| Keyword(4) | piezoelectric gyroscope |
| 1st Author's Name | Mitsuharu Chiba |
| 1st Author's Affiliation | Department of Electronics and materials, Faculty of Science and Engineering, Ishinomaki Senshu University() |
| 2nd Author's Name | Tetsuya Anbo |
| 2nd Author's Affiliation | Department of Electronics and materials, Faculty of Science and Engineering, Ishinomaki Senshu University |
| 3rd Author's Name | Noboru Wakatsuki |
| 3rd Author's Affiliation | Department of Electronics and materials, Faculty of Science and Engineering, Ishinomaki Senshu University |
| Date | 2000/6/30 |
| Paper # | US2000-34,EMD2000-30,CPM2000-45,OME2000-40 |
| Volume (vol) | vol.100 |
| Number (no) | 165 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |