Dual axial gyroscope with piezoelectric ceramics
First Claim
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1. A piezoelectric device, for use in a dual axial gyroscope system, comprising:
- piezoelectric exciter means shaped in plate disposed in a first plane, for generating a linear velocity;
first piezoelectric detector means, placed on a surface of the piezoelectric exciter means and shaped in plate disposed in a second plane, for detecting a first Coriolis force provided in a direction orthogonal to the second plane, said second plane being orthogonal to the first plane; and
second piezoelectric detector means, placed on the surface of the piezoelectric exciter means and shaped in plate disposed in a third plane, for detecting a second Coriolis force provided in a direction orthogonal to the the third plane, said third plane being orthogonal to both the first plane and the second plane.
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Abstract
A piezoelectric device is used in an dual axial gyroscope system and includes a piezoelectric exciter for generating a linear velocity on a first axis; a first piezoelectric detector element, placed on a surface of the piezoelectric exciter in a direction orthogonal to the first axis, for detecting a first Coriolis force provided in a direction orthogonal to the first detector; and as second piezoelectric detector element, placed on the surface of the piezoelectric exciter in a direction orthogonal to the first axis and the first detector, for detecting a second Coriolis force provided in a direction orthogonal to the second detector element.
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19 Claims
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1. A piezoelectric device, for use in a dual axial gyroscope system, comprising:
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piezoelectric exciter means shaped in plate disposed in a first plane, for generating a linear velocity; first piezoelectric detector means, placed on a surface of the piezoelectric exciter means and shaped in plate disposed in a second plane, for detecting a first Coriolis force provided in a direction orthogonal to the second plane, said second plane being orthogonal to the first plane; and second piezoelectric detector means, placed on the surface of the piezoelectric exciter means and shaped in plate disposed in a third plane, for detecting a second Coriolis force provided in a direction orthogonal to the the third plane, said third plane being orthogonal to both the first plane and the second plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 16, 17, 18, 19)
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13. A dual axis piezoelectric gyroscope system comprising:
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a waveform generator for generating a sinusoidal voltage signal; a piezoelectric device, in response to the sinusoidal voltage signal and an external rotational force, for generating two first charges representing a first Coriolis force and two second charges corresponding to a second Coriolis force; first processing means for converting the two first charges to generate first and second detection voltage signals; second processing means for converting the two second charges to generate third and fourth detection voltage signals; first output means for generating a first detection signal representing a difference between the first and second detection voltage signals; and second output means for generating a second detection signal representing a difference between the third and fourth detection voltage signals, wherein, said piezoelectric device comprises; piezoelectric exciter means, in response to the sinusoidal voltage, for generating a linear velocity on a first axis; first piezoelectric detector means, placed on a surface of the piezoelectric exciter means in a direction orthogonal to the first axis, for detecting the first Coriolis force provided in a direction orthogonal to the first detector means to generate said two first charges; and second Piezoelectric detector means, placed on the surface of the piezoelectric exciter means in a direction orthogonal to the first axis and the first piezoelectric detector means, for detecting the second Coriolis force provided in a direction orthogonal to the second detector means to generate said two second charges. - View Dependent Claims (14, 15)
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Specification