Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1994-03-16
1995-04-18
Williams, Hezron E.
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
73505, 324248, 505843, 505846, G01P 344
Patent
active
054068479
ABSTRACT:
A superconducting gyroscope of the present invention includes a circuit which produces a magnetic field which is synchronous with the rate of rotation experienced by the gyroscope, a sensing circuit for converting the synchronous magnetic field into an electric signal, a first shield made of superconducting material for performing shielding of external stray fields, and a second shield disposed inside the first shield and made of superconducting material for expelling trapped residual magnetic flux. The synchronous magnetic field producing circuit includes a magnetic core shaped in a toroid with an air gap. The magnetic core may alternatively be formed in meandering shape by a plurality of separate magnetic core members with a plurality of air gaps therebetween. The sensing circuit includes at least one SQUID which can be directly coupled to the magnetic core. The sensing circuit may also include a superconducting pick-up coil surrounding a portion of the magnetic core for picking up the synchronous magnetic field and producing a London field, and an input coil magnetically coupled to the SQUID. The SQUID and the magnetic core and/or other elements can be fabricated on a single substrate or chip.
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Lao Binneg Y.
Rowe David A.
Kwok Helen C.
Sierra Monolithics, Inc.
Williams Hezron E.
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