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XY-Axis Shell-Type Gyroscopes with Reduced Cross-Talk Sensitivity and/or Mode Matching

  • US 20130319116A1
  • Filed: 05/29/2012
  • Published: 12/05/2013
  • Est. Priority Date: 11/05/2010
  • Status: Active Grant
First Claim
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1. A shell-type gyroscope with improved cross-talk sensitivity, the shell-type gyroscope comprising:

  • a resonator substantially disposed in a resonator plane;

    a plurality of drive electrodes disposed substantially in the resonator plane; and

    a plurality of sense electrodes disposed parallel to the resonator plane, wherein the resonator is driven via the drive electrodes in an in-plane flexural or bulk resonance mode substantially in the resonator plane, and wherein rotations about two orthogonal axes in the resonator plane are sensed via the sense electrodes using two out-of-plane flexural or bulk modes of the resonator caused by rotation about the axes, the in-plane drive mode substantially rejecting cross-talk between the two orthogonal sense axes.

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