Micro-gyroscope for detecting motions
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United States of America Patent
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Jan 2, 2018
Grant Date -
Jun 23, 2016
app pub date -
Oct 13, 2015
filing date -
Apr 20, 2010
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Abstract
The invention relates to a micro-gyroscope for detecting motions relative to an X and/or Y and Z axis, particularly as a 3D, 5D, or 6D sensor. Sample masses are disposed uniformly about an anchor and can be driven radially relative to the central anchor. Anchor springs are disposed to attach the sample masses to a substrate, and these sample masses can be deflected both radially within and out of the X-Y plane. A sensor mass is disposed on one-of the sample masses by means of sensor springs, and the sensor springs allow deflection of the sensor mass within the plane of the sample mass, and orthogonal to the radial drive direction of the sample masses. Drive elements oscillate these sample masses in the X-Y plane, and sensor elements captures the defection of the sample masses due to the Coriolis forces generated when the substrate is rotated.
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