Position sensor having segment sensor element
AssigneeKyocera AVX Components (Werne) GmbH
InventorsTimothy Biggs, David Witts
Life of this patent
Estimating the term…
Abstract
A position sensor is provided. The position sensor includes a target and a segment sensor element. The segment sensor element defines a circumferential direction and a radial direction. The segment sensor element includes a transmit coil. The segment sensor element includes a plurality of receive coils positioned within a space defined by the transmit coil. The plurality of receive coils are offset relative to one another. The shape of each of the plurality of receive coils corresponds to a periodic waveform having a radial width that varies along the circumferential direction. Furthermore, the shape of at least one receive coil of the plurality of receive coils is distorted along at least one of the radial direction or the circumferential direction.
Claims18
A position sensor, comprising:
- a target;
- and
- a segment sensor element defining a circumferential direction and a radial direction, the segment sensor element comprising:
- a transmit coil;
- a plurality of receive coils positioned within a space defined by the transmit coil, the plurality of receive coils offset relative to one another;
- a first breakthrough balancing structure positioned within the space defined by the transmit coil such that the first breakthrough balancing structure is positioned along the circumferential direction between the transmit coil and a first end of the plurality of receive coils;
- and
- a second breakthrough balancing structure positioned within the space defined by the transmit coil such that the second breakthrough balancing structure is positioned along the circumferential direction between the transmit coil and a second end of the plurality of receive coils, the second end spaced apart from the first end along the circumferential direction,
- wherein the shape of each of the plurality of receive coils corresponds to a periodic waveform having a radial width that varies along the circumferential direction, and
- wherein the shape of at least one receive coil of the plurality of receive coils is distorted along at least one of the radial direction or the circumferential direction.
A position sensor, comprising:
- a target;
- and
- a segment sensor element defining a circumferential direction and a radial direction, the segment sensor element comprising:
- a transmit coil;
- a plurality of receive coils positioned within a space defined by the transmit coil, the plurality of receive coils comprising:
- a first receive coil having a shape corresponding to a first sine wave;
- and
- a second receive coil having a shape corresponding to a second sine wave that is phase-shifted relative to the first sine wave by about 90 degrees,
- wherein the shape of the first sine wave or the second sine wave is distorted along at least one of the radial direction or the circumferential direction;
- a first breakthrough balancing structure positioned within the space defined by the transmit coil such that the first breakthrough balancing structure is positioned along the circumferential direction between the transmit coil and a first end of the plurality of receive coils;
- and
- a second breakthrough balancing structure positioned within the space defined by the transmit coil such that the second breakthrough balancing structure is positioned along the circumferential direction between the transmit coil and a second end of the plurality of receive coils, the second end spaced apart from the first end along the circumferential direction.
Dependencies are inferred from the claim text.