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US 10,495,659 B2Granted
Speed and position sensing systems
AssigneeROLLS-ROYCE plc
InventorsJohn J. Costello, Andrew C. Pickard
Life of this patent
Estimating the term…
Abstract
A sensor system includes a drum, a first sensor, and a second sensor. The drum is mounted for rotation about a rotation axis and includes a band and a plurality of members that extend axially away from the band. The first sensor and the second sensor are configured to generate electrical output in response to detecting one or more of the plurality of members.
Claims20
A sensor system comprising
- a cylindrical drum mounted for rotation about a rotation axis, the cylindrical drum including a band and a plurality of axially extending members arranged circumferentially about the rotation axis and the plurality of axially extending members adapted to deflect radially outward away from the rotation axis based on a rotational speed of the cylindrical drum,
- a first magnetic sensor located radially within the cylindrical drum and aligned axially with the plurality of axially extending members, the first magnetic sensor configured to generate a first electrical output that indicates passage of each of the plurality of axially extending members about the first magnetic sensor when the cylindrical drum rotates about the rotation axis, and
- a second magnetic sensor located radially outside of the cylindrical drum and aligned axially with the plurality of axially extending members, the second magnetic sensor configured to generate a second electrical output that indicates passage of each of the plurality of axially extending members about the second magnetic sensor when the cylindrical drum rotates about the rotation axis,
- wherein the deflection of the axially extending members operates to vary voltage outputs of the first and second magnetic sensors.
1 more element
A sensor system comprising
- a drum mounted for rotation about a rotation axis, the drum including a band and a plurality of members that extend axially away from the band, the plurality of members arranged circumferentially about the rotation axis, and the plurality of members being free to deflect radially outward away from the rotation axis when the drum rotates about the rotation axis,
- a first sensor aligned axially with the plurality of members, the first sensor configured to generate a first electrical output that indicates passage of each of the plurality of members relative to the first sensor when the drum rotates about the rotation axis, and
- a second sensor configured to generate a second electrical output in response to detecting at least one of the plurality of members,
- wherein the deflection of the axially extending members operates to vary voltage outputs of the first and second sensors.
1 more element
A method comprising
- providing a drum including a band and a plurality of members that extend axially away from the band relative to a rotation axis, a first sensor aligned axially with the plurality of members, and a second sensor aligned axially with the plurality of members, the plurality of members being free to deflect radially outward away from the rotation axis when the drum is rotated about the rotation axis,
- generating a first electrical output indicative of passage of each of the plurality of members relative to the first sensor when the drum is rotated about the rotation axis, the first electrical output varying in response to deflection of the plurality of members,
- generating a second electrical output indicative of passage of each of the plurality of members relative to the second sensor when the drum is rotated about the rotation axis, the second electrical output varying in response to deflection of the plurality of members, and
- determining at least one of a rotational speed of the drum and an axial position of the drum based on at least one of the first electrical output and the second electrical output.
1 more element
Dependencies are inferred from the claim text.