MULTIAXIAL SENSOR
PROBLEM TO BE SOLVED: To provide a multiaxial sensor which facilitates detection of a physical amount in a multiaxial direction and downsizing and capable of correcting an error due to another-axis sensitivity and improving a detection accuracy .SOLUTION: A sensor 10 is fluctuated in electrostatic c...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a multiaxial sensor which facilitates detection of a physical amount in a multiaxial direction and downsizing and capable of correcting an error due to another-axis sensitivity and improving a detection accuracy .SOLUTION: A sensor 10 is fluctuated in electrostatic capacity between first fixed electrodes 31, 32, 35, 36 and movable electrodes 26, 28 when a weight part 11 is fluctuated in a Y direction by Coriolis force according to an angular rotation speed of a Z axis. The sensor 10 is also fluctuated in the electrostatic capacity between first and second blade parts 23, 24 and second fixed electrodes 33, 38 formed on a substrate 14. When an angular rotation speed of a Z axis is detected in the sensor 10 which is a multiaxial sensor, correction processing is performed by using the detection result of an angular rotation speed of the Y axis which is another axis.
【課題】多軸方向の物理量を検出可能としセンサの小型化が図れ、且つ他軸感度による誤差を補正し検出精度の向上が図れる多軸センサを提供すること。【解決手段】センサ10は、Z軸回転の角速度に応じたコリオリ力によって錘部11がY方向に変動すると、第1固定電極31,32,35,36と可動電極部26,28との間の静電容量が変動する。また、センサ10は、Y軸回転の角速度に応じたコリオリ力によって錘部11の第1及び第2翼部23,24がZ方向に回転すると、第1及び第2翼部23,24と基板14上に形成された第2固定電極33,38との間の静電容量が変動する。この多軸センサであるセンサ10において、Z軸回転の角速度を検出する際に、他軸であるY軸回転の角速度の検出結果を用いて補正処理を行う構成とした。【選択図】図1 |
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