Flat coil velocity transducer
AssigneeMagnetic Peripherals Inc.
InventorGlenn D. Albert
Life of this patent
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Abstract
A flat coil velocity transducer includes a thin, flat coil mounted to a member whose velocity is to be measured. The convolutions of the coil are skewed so that regions at opposite ends of the coil contain predominantly upper or lower legs of the convolutions. The coil moves transverse to a magnetic field to induce voltage in the legs of the coil. However, the field induces voltage in one, but not the other, end region so that a resultant voltage is induced in the coil dependent on the strength and direction of the magnetic field, the number and length of the legs in the region, and the direction and velocity of movement.
Claims4
A velocity transducer for measuring the velocity of a moveable member, said transducer comprising
- (a) a substantially thin, flat coil attached to said member having a plurality of convolutions skewed in the plane of movement of the member so that a first region at one end of the coil comprises a plurality of predominantly upper legs of convolutions and a second region at the other end of the coil comprises a plurality of predominantly lower legs of convolutions, and
- (b) means for producing a magnetic field in a direction transverse to said legs in a locality including one of said regions and excluding the other of said regions, the coil being so disposed and arranged with the magnetic field that a voltage is induced in the coil whenever the member is moved causing movement of the coil in a direction transverse to the magnetic field and the legs of the coil.
Dependencies are inferred from the claim text.