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US 10,209,098 B2Granted
Radial position sensor
AssigneeSkf Magnetic Mechatronics
InventorsYves Dupuis, Joaquim Da Silva
Life of this patent
Estimating the term…
Abstract
A radial position sensor that measures a radial position of a rotor within a stator is provided. The radial position sensor provides measures the radial position of the rotor along a first axis radial to a rotation axis of the rotor and along a second axis perpendicular to the first axis. The radial position sensor includes four magnetic poles, among which two poles are diametrically opposed along the first axis and two other poles are diametrically opposed along the second axis.
Claims9
A radial position sensor for measuring the radial position of a rotor within a stator, the sensor comprising:
- measuring means configured for measuring the position of the rotor along a first axis (X) radial to a rotation axis (Z-Z′) of the rotor and along a second axis (Y) perpendicular to the first axis, and including eight magnetic poles that are distributed, on the inner surface of the stator, with alternating magnetic polarities (N, S) around the entire circumference of the stator and that are arranged so that each pole deviates by an angle of approximately 30° from the nearest axis among the first axis (X) and the second axis (Y), wherein each pole is formed by an electromagnet, wherein the poles are arranged so that any successive poles along a peripheral direction are coupled by mutual inductance to induce magnetic interaction between any successive electromagnets.
Dependencies are inferred from the claim text.