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XY-axis shell-type gyroscopes with reduced cross-talk sensitivity and/or mode matching

  • US 9,091,544 B2
  • Filed: 05/29/2012
  • Issued: 07/28/2015
  • 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 in a plane apart from and parallel to the resonator plane, wherein the resonator is driven via the drive electrodes in an in-plane bulk resonance mode substantially in the resonator plane, and wherein rotations about two orthogonal sense axes in the resonator plane are sensed via the sense electrodes using two out-of-plane bulk modes of the resonator caused by rotation about the axes, the inplane mode substantially rejecting cross-talk between the two orthogonal sense axes.

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