JP4353087B2 - 回転振動型角速度センサ - Google Patents
回転振動型角速度センサ Download PDFInfo
- Publication number
- JP4353087B2 JP4353087B2 JP2004348543A JP2004348543A JP4353087B2 JP 4353087 B2 JP4353087 B2 JP 4353087B2 JP 2004348543 A JP2004348543 A JP 2004348543A JP 2004348543 A JP2004348543 A JP 2004348543A JP 4353087 B2 JP4353087 B2 JP 4353087B2
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- JP
- Japan
- Prior art keywords
- vibrating
- angular velocity
- substrate
- vibration
- rotational vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
-
- 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
- G01C19/5719—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using planar vibrating masses driven in a translation vibration along an axis
-
- 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
- G01C19/5705—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using masses driven in reciprocating rotary motion about an axis
- G01C19/5712—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using masses driven in reciprocating rotary motion about an axis the devices involving a micromechanical structure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
Description
図1は、本発明の第1実施形態に係る回転振動型角速度センサ100の概略構成を示す図であり、(a)は平面構成を示す図、(b)は(a)中のA−A一点鎖線に沿った概略断面図である。なお、図1(a)におけるハッチングは識別のために便宜上、施したものであり、断面を示すものではない。
この角速度センサ100は、大きくは、基板10と、基板10に固定された支持部20と、基板10上にて支持部20に支持され基板10の水平面と直交する中心軸z回りに回転振動可能な回転振動体30とを備えて構成されている。
次に、本角速度センサ100の作動について述べる。まず、第1の駆動電極60と第2の駆動電極61とから回転振動体30に対して互いに逆相の交流成分を持つ駆動信号を印加する。
ところで、本実施形態によれば、基板10と、基板10に固定された支持部20と、基板10上にて支持部20に支持され基板10の水平面と直交する中心軸z回りに回転振動可能な回転振動体30とを備え、回転振動体30の回転振動のもと、基板10の水平面と平行な軸x回りに角速度が印加されたときに、回転振動体30が基板10の水平面と直交する方向に変位し、この変位に基づいて角速度を検出するようにした回転振動型角速度センサにおいて、次のような点を特徴とする角速度センサ100が提供される。
図2は、本発明の第2実施形態に係る回転振動型角速度センサ200の概略構成を示す図であり、(a)は平面構成を示す図、(b)は(a)中のB−B一点鎖線に沿った概略断面図である。
なお、上記実施形態においては、1つの検出軸に対して第2の振動部は2個設けられているが、1個であってもよい。つまり、第2の振動部は、少なくとも1個あれば角速度検出が可能である。
31…回転振動体の第1の振動部、32…回転振動体の第2の振動部、
40…駆動梁、50…検出梁、
x…基板の水平面と平行な軸としての検出軸、
y…基板の水平面と平行な軸としての検出軸、
z…基板の水平面と直交する中心軸。
Claims (2)
- 基板(10)と、
前記基板(10)に固定された支持部(20)と、
前記基板(10)上にて前記支持部(20)に支持され前記基板(10)の水平面と直交する中心軸(z)回りに回転振動可能な回転振動体(30)とを備え、
前記回転振動体(30)の前記回転振動のもと、前記基板(10)の水平面と平行な軸(x)回りに角速度が印加されたときに、前記回転振動体(30)が前記基板(10)の水平面と直交する方向に変位し、この変位に基づいて前記角速度を検出するようにした回転振動型角速度センサにおいて、
前記回転振動体(30)は、前記回転振動の方向に変位可能な駆動梁(40)を介して前記支持部(20)に連結された第1の振動部(31)と、
前記基板(10)の水平面と直交する方向に変位可能な検出梁(50)を介して前記第1の振動部(31)に連結された第2の振動部(32)とを有するものであり、
前記第1の振動部(31)は中空円板形状をなしており、
前記支持部(20)は前記第1の振動部(31)の中空部に位置し、前記駆動梁(40)を介して前記第1の振動部(31)を支持しており、
前記駆動梁(40)は、前記支持部(40)上に位置する前記中心軸(z)から放射状に設けられているものであり、
前記第2の振動部(32)は、前記中心軸(z)から延びる前記駆動梁(40)の延伸方向に設置されており、
さらに、前記第2の振動部(32)は、前記第1の振動部(31)を構成する円板の周辺部の一部を切り欠き、この切り欠き内に設置されたものであることを特徴とする回転振動型角速度センサ。 - 前記回転振動体(30)において、前記第2の振動部(32)は、前記第1の振動部(31)の周辺部にて前記中心軸(z)に対して対称な位置に2個設けられていることを特徴とする請求項1に記載の回転振動型角速度センサ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004348543A JP4353087B2 (ja) | 2004-12-01 | 2004-12-01 | 回転振動型角速度センサ |
US11/239,084 US20060112764A1 (en) | 2004-12-01 | 2005-09-30 | Angular velocity detector having inertial mass oscillating in rotational direction |
KR1020050095959A KR100720605B1 (ko) | 2004-12-01 | 2005-10-12 | 회전방향으로 진동하는 관성체를 구비한 각속도 검출기 |
DE102005051048A DE102005051048A1 (de) | 2004-12-01 | 2005-10-25 | Winkelgeschwindigkeitsdetektor mit einer Trägheitsmasse, welche in einer Rotationsrichtung oszilliert |
CN2005101204609A CN1782713B (zh) | 2004-12-01 | 2005-11-10 | 具有沿转动方向振荡的惯性质量块的角速度探测器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004348543A JP4353087B2 (ja) | 2004-12-01 | 2004-12-01 | 回転振動型角速度センサ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006153798A JP2006153798A (ja) | 2006-06-15 |
JP4353087B2 true JP4353087B2 (ja) | 2009-10-28 |
Family
ID=36441846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004348543A Expired - Fee Related JP4353087B2 (ja) | 2004-12-01 | 2004-12-01 | 回転振動型角速度センサ |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060112764A1 (ja) |
JP (1) | JP4353087B2 (ja) |
KR (1) | KR100720605B1 (ja) |
CN (1) | CN1782713B (ja) |
DE (1) | DE102005051048A1 (ja) |
Families Citing this family (58)
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JP4687577B2 (ja) * | 2006-06-16 | 2011-05-25 | ソニー株式会社 | 慣性センサ |
KR100876912B1 (ko) | 2006-07-13 | 2009-01-08 | 부산대학교 산학협력단 | 변위증폭측정 메카니즘을 구비한 스테이지 |
JP4942470B2 (ja) * | 2006-12-20 | 2012-05-30 | 住友精密工業株式会社 | 2軸角速度センサ |
US8042396B2 (en) | 2007-09-11 | 2011-10-25 | Stmicroelectronics S.R.L. | Microelectromechanical sensor with improved mechanical decoupling of sensing and driving modes |
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-
2004
- 2004-12-01 JP JP2004348543A patent/JP4353087B2/ja not_active Expired - Fee Related
-
2005
- 2005-09-30 US US11/239,084 patent/US20060112764A1/en not_active Abandoned
- 2005-10-12 KR KR1020050095959A patent/KR100720605B1/ko not_active IP Right Cessation
- 2005-10-25 DE DE102005051048A patent/DE102005051048A1/de not_active Ceased
- 2005-11-10 CN CN2005101204609A patent/CN1782713B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR20060061218A (ko) | 2006-06-07 |
JP2006153798A (ja) | 2006-06-15 |
CN1782713B (zh) | 2010-05-26 |
CN1782713A (zh) | 2006-06-07 |
DE102005051048A1 (de) | 2006-06-08 |
KR100720605B1 (ko) | 2007-05-21 |
US20060112764A1 (en) | 2006-06-01 |
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