XY-Axis Gyroscopes with Electrode Configuration for Detecting Quadrature Errors and Out-of-Plane Sense Modes
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United States of America Patent
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Issued Date -
Sep 18, 2014
app pub date -
Mar 15, 2013
filing date -
Mar 15, 2013
priority date (Note) -
Abandoned
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Abstract
Various embodiments include feedback circuits for tuning the drive modes of a shell-type gyroscope, while other embodiments include separate circuits for tuning the sense mode of a shell-type gyroscope to reduce or avoid quadrature errors. Still other embodiments include circuits to excite the sense modes (i.e., the out-of-plane modes) of a gyroscope without requiring the application of a rotation to the gyroscope, to ensure that the sense modes are aligned with the sense electrodes.
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