Inductive Angular-Position Sensor
AssigneeSappel
InventorsGuy Bach, Bernard Dockwiller
Life of this patent
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Abstract
Inductive angular-position sensor, including a partially metallized disk that moves in rotation around its axis of revolution; and a stator that includes a primary coil and several secondary coils, whereby the secondary coils are arranged essentially symmetrically in pairs relative to the axis of revolution, so as to form one or more pairs of secondary coils, whereby the secondary coils of each pair are connected, on the one hand, to one another, in series and in phase opposition relative to one another, and, on the other hand, to the terminals of a measuring element that can generate an output signal that depends on the voltage at the terminals of the pair.
Claims8
Inductive angular-position sensor, comprising:
- A partially metallized disk (3) that moves in rotation around its axis of revolution (A);
- and
- A stator that comprises a primary coil (6), with an axis that is essentially merged with said axis of revolution, designed to be fed by a feeding means (11), and several secondary coils (7, 8, 9, 10) that are arranged so as to allow an inductive coupling between said primary coil and said secondary coils,
- characterized in that the axis of each secondary coil is essentially parallel to said axis of revolution, whereby said secondary coils are arranged in pairs that are essentially symmetrical relative to said axis of revolution, so as to form one or more pairs of secondary coils, whereby said secondary coils of each pair are connected, on the one hand, to one another, in series and in phase opposition relative to one another, and, on the other hand, to the terminals of a measuring means (12, 13) that can generate an output signal that depends on the voltage at the terminals of said pair.
Dependencies are inferred from the claim text.