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Gyroscope that Compensates for Fluctuations in Sensitivity

  • US 20170023364A1
  • Filed: 03/20/2015
  • Published: 01/26/2017
  • Est. Priority Date: 03/20/2015
  • Status: Active Grant
First Claim
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1. In an inertial sensor having a resonator and an accelerometer, a method of measuring sensitivity of the accelerometer, the method comprising:

  • adding a test signal to a quadrature tuning voltage applied to the resonator of the inertial sensor;

    receiving a quadrature error signal from the accelerometer of the inertial sensor;

    detecting a phase difference between the quadrature error signal and the test signal; and

    determining a bandwidth of the accelerometer based on the detected phase difference, the bandwidth indicating the sensitivity of the accelerometer.

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