JP2010038903A - 閉ループ線形駆動加速度計を用いて面外線形加速度を検出するためのシステムおよび方法 - Google Patents
閉ループ線形駆動加速度計を用いて面外線形加速度を検出するためのシステムおよび方法 Download PDFInfo
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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
- G01P15/13—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 measuring the force required to restore a proofmass subjected to inertial forces to a null position
- G01P15/131—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 measuring the force required to restore a proofmass subjected to inertial forces to a null position with electrostatic counterbalancing means
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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
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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
- G01P2015/0834—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 constituting a pendulum having the pivot axis disposed symmetrically between the longitudinal ends, the center of mass being shifted away from the plane of the pendulum which includes the pivot axis
-
- 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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Abstract
【解決手段】例示の実施形態において、面外線形加速度計100は面外方向に加速され、この加速度は不平衡プルーフマス102に回転トルクを発生させる。リバランシング力が、複数の交互配置されたロータ櫛歯116、120およびステータ櫛歯124、126の少なくとも1つに加えられ、このリバランシング力は回転トルクに対抗し、ロータ櫛歯は不平衡プルーフマス102の端部に配置され、ステータ櫛歯は不平衡プルーフマスの端部に隣接したステータ104、106の上に配置される。次いで、加速度の大きさが、加えられたリバランシング力に基づいて求められる。
【選択図】図1
Description
以下の式(2)は、プルーフマス櫛歯116、120とそれらのそれぞれのステータ櫛歯124、126との間の蓄積された容量性エネルギーを定義している。
102 プルーフマス
104 第1のステータ
106 第2のステータ
108 基板
110 回転軸
112 固定具
114 たわみ部材
116 第1のプルーフマス櫛歯
118 プルーフマスの第1の端部
120 第2のプルーフマス櫛歯
122 プルーフマスの第2の端部
124 ステータ櫛歯
126 ステータ櫛歯
128 間隙
130 プルーフマスの第1の部分
132 プルーフマスの第2の部分
134 プルーフマスの除去部分
202 第1の部分の表面積
204 第2の部分の表面積
206 プルーフマスの除去部分
302 接地板
400 閉ループ線形駆動加速度計コントローラ
402 プロセッサシステム
404 メモリ
406 加速度計制御インターフェース
408 出力インターフェース
410 通信バス
412 メモリの領域
414 コネクタ
416 コネクタ
Claims (3)
- 第1の質量により規定される第1のプルーフマス部分(130)および前記第1の質量とは異なる第2の質量により規定される第2のプルーフマス部分(132)を備えた不平衡プルーフマス(102)と、
前記不平衡プルーフマスの第1の端部の複数の第1のプルーフマス櫛歯(116)と、
前記複数の第1のプルーフマス櫛歯と交互配置され、前記複数の第1のプルーフマス櫛歯からオフセットされた複数の第1のステータ櫛歯(124)と、
前記不平衡プルーフマスの第2の端部の複数の第2のプルーフマス櫛歯(120)と、
前記複数の第2のプルーフマス櫛歯と交互配置され、前記複数の第2のプルーフマス櫛歯からオフセットされた複数の第2のステータ櫛歯(126)と、
前記不平衡プルーフマスを固定具(112)に結合するように構成され、前記第1のプルーフマス部分と前記第2のプルーフマス部分との間に回転軸を画定するように構成された少なくとも1つのたわみ部材(114)と、回転トルクは前記回転軸(110)の周りにあり、
前記複数の交互配置された第1のプルーフマス櫛歯および第1のステータ櫛歯、ならびに、前記複数の交互配置された第2のプルーフマス櫛歯および第2のステータ櫛歯のうちの少なくとも1つに、リバランシング力を加えるように動作可能なコントローラ(400)と、を備え、
前記リバランシング力は、前記不平衡プルーフマスの面外加速度に応答して発生された前記不平衡プルーフマスの回転トルクに対抗し、前記コントローラは、前記加えられたリバランシング力に基づいて加速度の大きさを求めるように動作可能である、
を備えた閉ループ線形駆動加速度計(100)。 - 第1の間隙は前記複数の第1のプルーフマス櫛歯と前記複数の第1のステータ櫛歯との間の第1の静電容量を規定し、第2の間隙は前記複数の第2のプルーフマス櫛歯と前記複数の第2のステータ櫛歯との間の第2の静電容量を規定し、前記不平衡プルーフマスの線形面外加速度は、前記第1の静電容量および前記第2の静電容量を変化させる前記回転トルクを発生させる、請求項1に記載の閉ループ線形駆動加速度計。
- 前記コントローラは、
前記複数の第1のステータ櫛歯および前記複数の第2のステータ櫛歯に電気的に接続され、前記不平衡プルーフマスの回転トルクを概ね打ち消すリバランシング電圧を前記複数の第1のステータ櫛歯および前記複数の第2のステータ櫛歯の少なくとも1つに印加するように構成された閉ループ線形駆動加速度計コントローラを備える、請求項1に記載の閉ループ線形駆動加速度計。
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US12/183,678 US8171793B2 (en) | 2008-07-31 | 2008-07-31 | Systems and methods for detecting out-of-plane linear acceleration with a closed loop linear drive accelerometer |
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JP2015503758A (ja) * | 2012-01-12 | 2015-02-02 | ムラタ エレクトロニクス オサケユキチュア | 加速度センサー構造体およびその用途 |
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JP2014190807A (ja) * | 2013-03-27 | 2014-10-06 | Denso Corp | 加速度センサ |
Also Published As
Publication number | Publication date |
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JP5770968B2 (ja) | 2015-08-26 |
EP2151691A3 (en) | 2012-05-09 |
US20100024552A1 (en) | 2010-02-04 |
EP2151691A2 (en) | 2010-02-10 |
JP6088587B2 (ja) | 2017-03-01 |
US8171793B2 (en) | 2012-05-08 |
JP2015212701A (ja) | 2015-11-26 |
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