Differential linear velocity transducer

Details Differential linear velocity transducer Differential linear velocity transducer

1979-03-28

1981-04-07

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Reciprocating

310 15, H02K 3300

Patent

active

042609143

ABSTRACT:
A velocity transducer for converting linear mechanical motion to an electrical signal. A stationary permanent magnet is supported within and spaced from an iron pole piece assembly which forms a closed path around the magnet. The pole piece assembly has a pair of linear pole piece segments which extend in parallel on opposite sides of the magnet, spaced apart from the north and south pole faces of the magnet, respectively. A moveable (i.e. slideable) coil is wound around each such linear pole piece. The two coils are series-connected and oppositely wound with respect to the flux produced by the magnet. Noise signals induced in the coils subtract from each other and substantially cancel, but motion-related signals add.

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