JP6677269B2 - 容量性微小電気機械加速度計 - Google Patents
容量性微小電気機械加速度計 Download PDFInfo
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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
- G01C19/5705—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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- 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
- G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
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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
- G01P15/0802—Details
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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
- 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
- G01P2015/0805—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 being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration
- G01P2015/0822—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 being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass
- G01P2015/0825—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 being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass for one single degree of freedom of movement of the mass
- G01P2015/0831—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 being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass for one single degree of freedom of movement of the mass the mass being of the paddle type having the pivot axis between the longitudinal ends of the mass, e.g. see-saw configuration
-
- 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
- G01P2015/0862—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 being provided with particular means being integrated into a MEMS accelerometer structure for providing particular additional functionalities to those of a spring mass system
-
- 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
- G01P2015/0862—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 being provided with particular means being integrated into a MEMS accelerometer structure for providing particular additional functionalities to those of a spring mass system
- G01P2015/0882—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 being provided with particular means being integrated into a MEMS accelerometer structure for providing particular additional functionalities to those of a spring mass system for providing damping of vibrations
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- General Physics & Mathematics (AREA)
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Description
Claims (10)
- 横方向および縦方向に延在し、前記横方向が前記縦方向に垂直である基板平面を画定する基板と、
前記基板平面に垂直な垂直軸方向の加速度を測定するための、前記基板に形成された第1のセンサと、
前記基板平面の上方および/または下方の前記基板平面に隣接し、かつ、前記基板平面に平行な内部パッケージ平面を有する加速度計パッケージと、
を備え、
前記第1のセンサは、前記基板に対して可動なロータと、ロータ吊具と、前記基板に対して不動の一以上のステータと、を含み、
前記ロータは、差動容量測定のための一以上のロータ電極を含み、前記一以上のステータは、差動容量測定のための一以上のステータ電極を含み、
前記吊具は、一以上の固定されたロータ吊具バーと、横方向のロータ回転軸に配置された第1の横方向のねじりバネおよび第2の横方向のねじりバネと、を含み、
前記第1の横方向ねじりバネおよび前記第2の横方向ねじりバネは、前記ロータに取り付けられている、容量性微小機械加速計であって、
前記ロータは、少なくとも、横方向ロータバーと、前記横方向ロータバーに取り付けられた第1の縦方向ロータバーと、前記横方向ロータバーに取り付けられた第2の縦方向ロータバーと、を含む両面シーソーフレームであり、
前記縦方向ロータバーのそれぞれは、前記横方向のロータ回転軸の第1の側から前記横方向のロータ回転軸の第2の側まで延在し、
前記縦方向ロータバーのそれぞれは、前記横方向のロータ回転軸の前記第1の側にある一以上の第1の制動板と、前記横方向のロータ回転軸の前記第2の側にある一以上の第1の制動板と、を含み、
一以上の第2の制動板は、少なくとも1つの前記第1の制動板が、前記横方向のロータ回転軸の前記第1の側にある第1の重複領域において前記基板平面への前記第2の制動板の投影と重なり、かつ、少なくとも1つの前記第1の制動板が、前記横方向のロータ回転軸の前記第2の側にある第2の重複領域において前記基板平面への前記第2の制動板の投影と重なるように、前記一以上の第1の制動板の少なくとも一部の上方および/または下方の前記内部パッケージ平面に固定される、
容量性微小機械加速度計。 - 前記第1の重複領域における前記ねじり減衰係数は、前記第2の重複領域における前記減衰係数に等しい、
請求項1に記載の容量性微小機械加速度計。 - 前記第1の重複領域は、前記横方向のロータ回転軸を含む垂直平面に対して前記第2の重複領域と平面対称である、
請求項1または2に記載の容量性微小機械加速度計。 - 前記加速度計は、さらに、
横軸方向の加速度を測定するための第2のセンサと、
縦軸方向の加速度を測定するための第3のセンサと、
を備え、
前記ロータは、前記第2のセンサおよび前記第3のセンサの両方を部分的に囲んでいる、
請求項1〜3のいずれか一項に記載の容量性微小機械加速度計。 - 前記一以上の固定された前記ロータ吊具バーは、
第1の横方向ロータ吊具バーと、
第2の横方向ロータ吊具バーと、
を備え、
第1の横方向ねじりバネは、前記第1の横方向ロータ吊具バーの端部に取り付けられており、
第2の横方向ねじりバネは、前記第2の横方向ロータ吊具バーの端部に取り付けられている、
請求項4記載の容量性微小機械加速度計。 - 前記一以上の固定されたロータ吊具バーは、
第1の横方向ロータ吊具バーと、
第2の横方向ロータ吊具バーと、
を備え、
前記第1の横方向ロータ吊具バーに取り付けられた第1の縦方向変位バーは、前記横方向ロータバーから離れる方向に前記第1の横方向ロータ吊具バーから延伸しており、
前記第2の横方向ロータ吊具バーに取り付けられた第2の縦方向変位バーは、前記横方向ロータバーから離れる方向に前記第2の横方向ロータ吊具バーから延伸しており、
前記第1の横方向ねじりバネは、前記第1の縦方向変位バーに取り付けられており、
前記第2の横方向ねじりバネは、前記第2の縦方向変位バーに取り付けられている、
請求項4に記載の容量性微小機械加速度計。 - 前記一以上の固定されたロータ吊具バーは、
第1の縦方向変位バーと、
第2の縦方向変位バーと、
を備え、
前記第1の横方向ねじりバネは、前記第1の縦方向変位バーの端部に取り付けられており、
前記第2の横方向ねじりバネは、前記第2の縦方向変位バーの端部に取り付けられており、
両方の縦方向変位バーは、横方向ロータバーから離れたそれぞれのアンカーポイントから延伸している、
請求項4に記載の容量性微小機械加速度計。 - 前記一以上の固定されたロータ吊具バーは、縦方向のロータ吊具バーを備え、
前記第1の横方向ねじりバネは、第1の横方向吊具バーの一端に取り付けられており、
前記第1の横方向吊具バーの他端は、前記縦方向ロータ吊具バーに取り付けられており、
前記第2の横方向ねじりバネは、第2の横方向吊具バーの一端に取り付けられており、
前記第2の横方向吊具バーの他端は、前記縦方向ロータ吊具バーに取り付けられている、
請求項4に記載の容量性微小機械加速度計。 - 前記一以上の第1の制動板の少なくとも1つ、および、前記基板平面への投影が当該少なくとも1つの第1の制動板と重なる少なくとも1つの前記第2の制動板は、電圧源に接続された導電性電極である、
請求項1〜8のいずれか一項に記載の容量性微小機械加速度計。 - 請求項9に記載の加速度計で自己検査を実施する方法であって、
駆動力は、導電性電極である、前記一以上の第1の制動板の少なくとも1つ、および、前記基板平面への投影が当該少なくとも1つの第1の制動板と重なる少なくとも1つの前記第2の制動板に試験電圧を印加することによって前記第1のセンサの前記ロータに供給され、
試験応答信号は、前記ロータ電極および前記ステータ電極からの静電容量測定を用いて
読み取られる、
加速度計で自己検査を実施する方法。
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CN109946481B (zh) * | 2019-04-02 | 2024-04-19 | 四川知微传感技术有限公司 | 一种基于刚度补偿的mems闭环加速度计 |
RU190692U1 (ru) * | 2019-04-15 | 2019-07-09 | Акционерное общество "Научно-производственное объединение автоматики имени академика Н.А. Семихатова" | Двухосный поворотный динамический стенд |
EP3757579B1 (en) * | 2019-06-26 | 2023-07-26 | Murata Manufacturing Co., Ltd. | Capacitive micromechanical accelerometer |
EP3957953A1 (en) * | 2020-08-19 | 2022-02-23 | Aptiv Technologies Limited | System and method for self-test of inertial measurement unit (imu) |
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- 2018-05-03 CN CN201810414277.7A patent/CN108872638B/zh active Active
- 2018-05-03 EP EP18170493.3A patent/EP3401688B1/en active Active
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TWI663403B (zh) | 2019-06-21 |
JP2019023613A (ja) | 2019-02-14 |
CN108872638B (zh) | 2020-12-01 |
EP3401688B1 (en) | 2020-04-01 |
US20180321038A1 (en) | 2018-11-08 |
US10823568B2 (en) | 2020-11-03 |
CN108872638A (zh) | 2018-11-23 |
TW201843455A (zh) | 2018-12-16 |
EP3401688A1 (en) | 2018-11-14 |
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