Coriolis effect transducer
First Claim
1. A method for testing a Coriolis transducer having a mass vibrate along a vibratory direction in a resonant structure and undergo a displacement along a sensitive axis, perpendicular to the vibration, in response to an angular rate about a rate sensing axis, such displacement being perpendicular to both the vibration and the rate sensing axis, such method comprising:
- applying forces, FTEST VIBRATORY and FTEST SENSITIVE, on the mass along the direction of vibration and along the sensitive axis, respectively, in a predetermined ratio, N; and
, measuring an incremental output VOUT TEST of the transducer in response to the forces, FTEST SENSITIVE and FTEST VIBRATORY.
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Abstract
A method for testing a Coriolis transducer having a mass adapted vibrate along a vibratory direction in a resonant structure and undergo a displacement along a sensitive axis, perpendicular to the vibration, in response to an angular rate about a mutually perpendicular rate sensing axis. In the absence of an angular rate about the rate sensing axis, forces, FTEST VIBRATORY and FTEST SENSITIVE are applied on the mass along the direction of vibration and along the sensitive axis, respectively, in a predetermined ratio, N. The output VOUT TEST of the transducer is measured in response to the forces, FTEST VIBRATORY and FTEST SENSITIVE.
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Citations
4 Claims
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1. A method for testing a Coriolis transducer having a mass vibrate along a vibratory direction in a resonant structure and undergo a displacement along a sensitive axis, perpendicular to the vibration, in response to an angular rate about a rate sensing axis, such displacement being perpendicular to both the vibration and the rate sensing axis, such method comprising:
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applying forces, FTEST VIBRATORY and FTEST SENSITIVE, on the mass along the direction of vibration and along the sensitive axis, respectively, in a predetermined ratio, N; and
,measuring an incremental output VOUT TEST of the transducer in response to the forces, FTEST SENSITIVE and FTEST VIBRATORY. - View Dependent Claims (2, 3, 4)
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4. The method recited in claim 2 wherein the characteristic frequency of the resonant structure is determined by applying a known vibratory frequency, or frequencies, to the mass within the resonant structure.
Specification