Gyroscope that compensates for fluctuations in sensitivity
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United States of America Patent
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Jan 16, 2018
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Mar 20, 2015
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Mar 20, 2015
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Abstract
A method compensates for a sensitivity of an inertial sensor having a resonator and an accelerometer. The method includes adding a test signal to a quadrature tuning voltage applied to the resonator of the inertial sensor. The method also includes receiving a quadrature error signal from the accelerometer of the inertial sensor. The method also includes detecting a phase difference between the quadrature error signal and the test signal. The method also includes determining a bandwidth of the accelerometer based on the detected phase difference, the bandwidth indicating the sensitivity of the accelerometer.
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