Angular velocity sensor
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United States of America Patent
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Sep 11, 2018
Grant Date -
Sep 3, 2015
app pub date -
May 18, 2015
filing date -
Nov 19, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A vibrator of an angular velocity sensor includes detection beam portions extending from a central base portion in a cross shape, and drive beam portions between and connected to two adjacent detection beam portions. Each of the detection beam portions includes a base-end detection beam connected to the central base portion, and a left detection beam and a right detection beam. The left detection beam is connected to one of the drive beam portions that is located on the left of the corresponding one of the detection beam portions, and the right detection beam is connected to one of the drive beam portions that is located on the right of the corresponding one of the detection beam portions. The drive beam portions are driven to vibrate in a direction toward the central base portion and a direction away from the central base portion so that each two facing ones of the drive beam portions are in the same phase and each two adjacent ones of the drive beam portions are in the opposite phases.
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