Vibrating-mass gyroscope systems and method
First Claim
1. A vibrating-mass gyroscope system comprising:
- a sensor system comprising a vibrating-mass and a plurality of electrodes coupled to the vibrating-mass that are configured to facilitate in-plane motion of the vibrating-mass; and
a gyroscope controller configured to generate;
a drive signal that is provided to a first set of the plurality of electrodes to provide an in-plane periodic oscillatory motion of the vibrating-mass along a drive axis in response to a drive axis force along the drive axis generated in response to the drive signal,a force-rebalance signal that is provided to a second set of the plurality of electrodes to calculate a rotation of the vibrating-mass gyroscope system about an input axis, the force-rebalance signal being configured to generate a force-rebalance force along a second axis that is orthogonal to the drive axis, anda quadrature signal that is provided to a third set of the plurality of electrodes to generate a quadrature force along a third axis that is arranged at approximately 45°
relative to the drive axis and the second axis to substantially mitigate quadrature effects associated with the vibrating-mass.
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Abstract
One embodiment of the invention includes a vibrating-mass gyroscope system. The system includes a sensor system comprising a vibrating-mass and a plurality of electrodes coupled to the vibrating-mass that are configured to facilitate in-plane motion of the vibrating-mass. The system also includes a gyroscope controller configured to generate a drive signal that is provided to a first set of the plurality of electrodes to provide an in-plane periodic oscillatory motion of the vibrating-mass along a drive axis, to generate a force-rebalance signal that is provided to a second set of the plurality of electrodes to calculate a rotation of the vibrating-mass gyroscope system about an input axis, and to generate a quadrature signal that is provided to a third set of the plurality of electrodes to substantially mitigate quadrature effects associated with the vibrating-mass.
10 Citations
12 Claims
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1. A vibrating-mass gyroscope system comprising:
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a sensor system comprising a vibrating-mass and a plurality of electrodes coupled to the vibrating-mass that are configured to facilitate in-plane motion of the vibrating-mass; and a gyroscope controller configured to generate; a drive signal that is provided to a first set of the plurality of electrodes to provide an in-plane periodic oscillatory motion of the vibrating-mass along a drive axis in response to a drive axis force along the drive axis generated in response to the drive signal, a force-rebalance signal that is provided to a second set of the plurality of electrodes to calculate a rotation of the vibrating-mass gyroscope system about an input axis, the force-rebalance signal being configured to generate a force-rebalance force along a second axis that is orthogonal to the drive axis, and a quadrature signal that is provided to a third set of the plurality of electrodes to generate a quadrature force along a third axis that is arranged at approximately 45°
relative to the drive axis and the second axis to substantially mitigate quadrature effects associated with the vibrating-mass. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vibrating-mass gyroscope system comprising:
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a sensor system comprising a plurality of vibrating-masses and a respective plurality of sets of electrodes respectively coupled to each of the plurality of vibrating-masses, each of the plurality of sets of electrodes being configured to facilitate in-plane motion of a respective one of the plurality of vibrating-masses; and a gyroscope controller configured to generate; drive signals that are provided to drive electrodes of each of the plurality of sets of electrodes to provide an in-plane periodic oscillatory motion of the respective plurality of vibrating-masses along a drive axis in response to a drive axis force along the drive axis of each of the plurality of vibrating-masses generated in response to the drive signals, force-rebalance signals that are provided to sense electrodes of each of the plurality of sets of electrodes to calculate a rotation of the vibrating-mass gyroscope system about an input axis, the force-rebalance signals being configured to generate a force-rebalance force along a second axis of each of the plurality of vibrating-masses that is orthogonal to the respective drive axis, and quadrature signals that are provided to quadrature electrodes of each of the plurality of sets of electrodes to generate a quadrature force along a third axis of each of the plurality of vibrating-masses that is arranged at approximately 45°
relative to the respective drive axis and the second axis to substantially mitigate quadrature effects associated with the respective plurality of vibrating-masses. - View Dependent Claims (11, 12)
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Specification