POSITION ENCODER

PCT No. PCT/GB95/01095 Sec. 371 Date Dec. 12, 1996 Sec. 102(e) Date Dec. 12, 1996 PCT Filed May 15, 1995 PCT Pub. No. WO95/31696 PCT Pub. Date Nov. 23, 1995In a linear position encoder, a support is provided upon which a pair of phase quadrature windings are mounted. The windings are arranged to hav...

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Bibliographic Details
Main Authors ELY, DAVID, THOMAS, ELIOT, HOWE, ANDREW, ROBERT, LINTON, DAMES, ANDREW, NICHOLAS
Format Patent
LanguageEnglish
French
German
Published 05.01.2005
Edition7
Subjects
ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
TARIFF METERING APPARATUS
TESTING
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Summary:PCT No. PCT/GB95/01095 Sec. 371 Date Dec. 12, 1996 Sec. 102(e) Date Dec. 12, 1996 PCT Filed May 15, 1995 PCT Pub. No. WO95/31696 PCT Pub. Date Nov. 23, 1995In a linear position encoder, a support is provided upon which a pair of phase quadrature windings are mounted. The windings are arranged to have a sinusoidal magnetic sensitivity characteristic along the length of the support. Mounted on a movable element there is a resonant circuit including a coil and capacitor that can magnetically couple with the windings. When the circuit is excited, it induces currents in the windings that are dependent upon the position of the circuit within a period Ts of the windings. An excitation and processing unit is provided to energize the circuit and to process the signals induced in the windings. The encoder may in a variation, measure rotational or radial position instead of translation.
Bibliography:Application Number: EP19950918680