Multi-turn position sensor having variable coupling transformer

Details Multi-turn position sensor having variable coupling transformer Multi-turn position sensor having variable coupling transformer

1992-11-12

1994-11-22

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Displacement

32420713, 32420722, 32420725, 336 20, G01B 714, H01F 2102

Patent

active

053672569

ABSTRACT:
A multi-turn rotational position sensor. A spirally wound conductor has an inner end coupled to a rotatable shall through a transmission. As the shaft rotates, the spirally wound conductor changes shape. The spirally wound conductor is inductively coupled to a transfcrmer secondary and the transformer coupling between the spirally wound conductor changes as the shaft rotates. An output from the transformer secondary is used to determine the shaft's rotational position.

REFERENCES:
patent: 4631478 (1986-12-01), Knetsch et al.

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