JP6385333B2 - 振動リング構造体 - Google Patents
振動リング構造体 Download PDFInfo
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- JP6385333B2 JP6385333B2 JP2015500978A JP2015500978A JP6385333B2 JP 6385333 B2 JP6385333 B2 JP 6385333B2 JP 2015500978 A JP2015500978 A JP 2015500978A JP 2015500978 A JP2015500978 A JP 2015500978A JP 6385333 B2 JP6385333 B2 JP 6385333B2
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- Prior art keywords
- ring
- electrode
- gyroscope
- primary
- vibration mode
- Prior art date
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/125—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by capacitive pick-up
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
- G01C19/567—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode
- G01C19/5677—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode of essentially two-dimensional vibrators, e.g. ring-shaped vibrators
- G01C19/5684—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode of essentially two-dimensional vibrators, e.g. ring-shaped vibrators the devices involving a micromechanical structure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/14—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of gyroscopes
Description
本発明に関して、付随する図面を参照しながら、実施例を使ってさらに説明を行う。
Claims (9)
- リング本体およびそれに固定された少なくとも8つの実質的に同じリング容量電極を含む振動リングジャイロスコープであって、それぞれのリング容量電極が、前記リング本体の第1の角度範囲上に伸び、前記リング本体の第2の角度範囲上で前記リング本体に取付けられ、前記第1の角度範囲が、前記第2の角度範囲より大きく、前記リング容量電極が、取付け部材により前記リング本体に固定され、前記取付け部材の幅が前記第2の角度範囲を画定し、それぞれのリング容量電極が2つのカンチレバーを含み、それぞれのカンチレバーがその底部で前記取付け部材により前記リング本体に固定され、少なくとも1つのリング容量電極が、前記ジャイロスコープの面内曲げ振動モードの波腹に中心がある第2の角度範囲を有する、ジャイロスコープ。
- 前記ジャイロスコープが、前記取付け部材と半径方向に整列される位置で前記リング本体に固定されたリガメントを含む懸架手段をさらに含む、請求項1に記載のジャイロスコープ。
- 前記リング容量電極が、前記リング本体の外側に放射状に配置される、請求項1または2に記載のジャイロスコープ。
- 前記ジャイロスコープの前記面内曲げ振動モードで前記リング容量電極が実質的に変形を生じないように、前記少なくとも1つのリング容量電極が前記ジャイロスコープの前記面内曲げ振動モードの共振振動数の少なくとも2倍の共振振動数を有する、請求項1に記載のジャイロスコープ。
- 前記ジャイロスコープが、一次面内曲げ振動モードおよび二次面内曲げ振動モードを有し、リング軸の周りの前記ジャイロスコープの角運動が前記一次面内曲げ振動モードと前記二次面内曲げ振動モードの間でコリオリ結合を生じ、少なくとも1つのリング容量電極が、第2の角度範囲の中心が前記一次面内曲げ振動モードの波腹にある少なくとも1つの一次リング容量電極、および第2の角度範囲の中心が前記二次面内曲げ振動モードの波腹にある少なくとも1つの二次リング容量電極を含む、請求項1から4のいずれか一項に記載のジャイロスコープ。
- 前記第1の角度範囲が、前記第2の角度範囲より少なくとも5倍大きい、請求項1から5のいずれか一項に記載のジャイロスコープ。
- それぞれのリング容量電極に関連する固定電極をさらに含み、固定電極およびリング容量電極のそれぞれの対が容量変換器を規定する、請求項1から6のいずれか一項に記載のジャイロスコープ。
- 前記一次面内曲げ振動モードを開始し、維持する一次駆動手段および前記二次面内曲げ振動モードを検出する二次検出手段をさらに含み、前記一次駆動手段および/または前記二次検出手段が、リング容量電極および対応する固定電極を含む、請求項5に記載のジャイロスコープ。
- 前記一次面内曲げ振動モードを検出する一次検出手段、および前記二次面内曲げ振動モードをゼロにする二次駆動手段をさらに含み、前記一次検出手段および/または前記二次駆動手段が、リング容量電極および対応する固定電極を含む、請求項8に記載のジャイロスコープ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1205014.2A GB201205014D0 (en) | 2012-03-22 | 2012-03-22 | Vibratory ring structure |
GB1205014.2 | 2012-03-22 | ||
PCT/GB2013/050615 WO2013140134A1 (en) | 2012-03-22 | 2013-03-13 | Vibratory ring structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015511023A JP2015511023A (ja) | 2015-04-13 |
JP6385333B2 true JP6385333B2 (ja) | 2018-09-05 |
Family
ID=46086912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015500978A Active JP6385333B2 (ja) | 2012-03-22 | 2013-03-13 | 振動リング構造体 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9671422B2 (ja) |
EP (1) | EP2828618B1 (ja) |
JP (1) | JP6385333B2 (ja) |
GB (1) | GB201205014D0 (ja) |
WO (1) | WO2013140134A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI126070B (en) | 2014-01-28 | 2016-06-15 | Murata Manufacturing Co | Improved ring gyroscope structure and gyroscope |
US10180323B2 (en) * | 2014-06-09 | 2019-01-15 | The Regents Of The University Of California | Axi-symmetric small-footprint gyroscope with interchangeable whole-angle and rate operation |
GB201514114D0 (en) | 2015-08-11 | 2015-09-23 | Atlantic Inertial Systems Ltd | Angular velocity sensors |
GB2562450A (en) * | 2017-01-30 | 2018-11-21 | Cambridge Entpr Ltd | A method of optimising the performance of a MEMS rate gyroscope |
GB2565298B (en) * | 2017-08-07 | 2022-03-16 | Atlantic Inertial Systems Ltd | Angular rate sensors |
GB2570732B (en) | 2018-02-06 | 2023-01-11 | Atlantic Inertial Systems Ltd | Angular rate sensors |
EP3985351A1 (en) * | 2020-10-16 | 2022-04-20 | Atlantic Inertial Systems Limited | Quadrature bias error reduction for vibrating structure gyroscopes |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0791955A (ja) | 1993-08-06 | 1995-04-07 | Murata Mfg Co Ltd | 振動ジャイロ |
JPH0868638A (ja) | 1994-08-30 | 1996-03-12 | Taiyo Yuden Co Ltd | 圧電振動ジャイロ,その支持構造,多次元ジャイロ |
DE19523895A1 (de) | 1995-06-30 | 1997-01-02 | Bosch Gmbh Robert | Beschleunigungssensor |
DE19617666B4 (de) | 1996-05-03 | 2006-04-20 | Robert Bosch Gmbh | Mikromechanischer Drehratensensor |
US5760304A (en) * | 1997-02-18 | 1998-06-02 | Litton Systems, Inc. | Vibratory rotation sensor with AC forcing voltages |
US5872313A (en) * | 1997-04-07 | 1999-02-16 | Delco Electronics Corporation | Temperature-compensated surface micromachined angular rate sensor |
DE19850066B4 (de) * | 1998-10-30 | 2008-05-21 | Robert Bosch Gmbh | Mikromechanischer Neigungssensor |
CA2389980A1 (en) | 1999-11-02 | 2001-05-10 | Eta Sa Fabriques D'ebauches | Time base comprising an integrated micromechanical ring resonator |
US7861589B2 (en) | 2003-07-29 | 2011-01-04 | Industrial Technology Research Institute | Ring body and supporting structure of vibratile gyroscope |
CN1985149B (zh) | 2004-07-12 | 2010-11-03 | 住友精密工业株式会社 | 角速度传感器 |
EP1832841B1 (en) * | 2006-03-10 | 2015-12-30 | STMicroelectronics Srl | Microelectromechanical integrated sensor structure with rotary driving motion |
EP2092272B1 (en) | 2006-12-15 | 2015-01-21 | Atlantic Inertial Systems Limited | Improvements in or relating to a gyroscope |
ATE520960T1 (de) | 2007-09-18 | 2011-09-15 | Atlantic Inertial Systems Ltd | Verbesserungen in bezug auf winkelgeschwindigkeitssensoren |
WO2011013429A1 (ja) | 2009-07-27 | 2011-02-03 | 住友精密工業株式会社 | 圧電体膜を用いた振動ジャイロ |
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2012
- 2012-03-22 GB GBGB1205014.2A patent/GB201205014D0/en not_active Ceased
-
2013
- 2013-03-13 JP JP2015500978A patent/JP6385333B2/ja active Active
- 2013-03-13 WO PCT/GB2013/050615 patent/WO2013140134A1/en active Application Filing
- 2013-03-13 US US14/386,477 patent/US9671422B2/en active Active
- 2013-03-13 EP EP13711455.9A patent/EP2828618B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2828618A1 (en) | 2015-01-28 |
GB201205014D0 (en) | 2012-05-09 |
US20150040663A1 (en) | 2015-02-12 |
US9671422B2 (en) | 2017-06-06 |
JP2015511023A (ja) | 2015-04-13 |
EP2828618B1 (en) | 2016-02-24 |
WO2013140134A1 (en) | 2013-09-26 |
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