Transformer coupled position detecting apparatus with phase chan

Details Transformer coupled position detecting apparatus with phase chan Transformer coupled position detecting apparatus with phase chan

1981-11-09

1983-09-20

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Displacement

324 83D, 324173, G01B 700, G01P 348, G01R 2500

Patent

active

044058969

ABSTRACT:
A rotation detecting apparatus includes a transformer consisting of a primary coil disposed to be energized by an energizing source and two secondary coils connected in opposite polarity to each other on the longitudinal sides of the primary coil. The magnetic coupling of the transformer is changed in response to the rotation of a rotating body and this changes the phase of the composite voltage signal of the secondary coils. By virtue of this construction, not only the rotation of the rotating body can be detected at low rotational speeds, but also the rotation can be detected accurately without being affected by the ambient temperature.

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