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US 2004/0070391 A1Published application
Electric motor with magnetic sensor wheel
AssigneeDana Corporation
InventorJerzy Muszynski
Life of this patent
Estimating the term…
Abstract
A magnetic position sensor wheel for an angular position transducer of an electric motor is provided which includes a hub with a flange, a first ring of magnetic material disposed on one side of the flange between a hub axis and an outer periphery of the flange, and a second ring of magnetic material extending axially along the outer periphery of the flange.
Claims22
A magnetic position sensor wheel for an angular position transducer of an electric motor comprising:
- a body defining a hub disposed about an axis of rotation and a flange extending radially from said hub;
- a first ring of magnetic material disposed on one side of said flange between said axis and a radially outer periphery of said flange;
- and
- a second ring of magnetic material extending axially along said radially outer periphery of said flange.
1 more element
An angular position transducer, comprising:
- a magnetic position sensor wheel having:
- a body defining a hub disposed about an axis of rotation and a flange extending radially from said hub;
- a first ring of magnetic material disposed on one side of said flange between said axis and a radially outer periphery of said flange;
- and,
- a second ring of magnetic material extending axially along said radially outer periphery of said flange;
- a first sensor that generates a first position indicative signal responsive to rotation of said first ring of magnetic material;
- and,
- a second sensor that generates a second position indicative signal responsive to rotation of said second ring of magnetic material.
5 more elements
A brushless motor comprising:
- a multi poled rotor;
- a coiled stator encircling said stator;
- a controller to commutate said stator coils;
- an angular position transducer to signal said controller of said rotor angular position, said transducer including:
- a magnetic position sensor wheel having:
- a body defining a hub disposed about an axis of rotation of said rotor and a flange extending radially from said hub;
- a first ring of magnetic material disposed on one side of said flange between said axis and a radially outer periphery of said flange;
- and,
- a second ring of magnetic material extending axially along said radially outer periphery of said flange;
- a first sensor that generates a first position indicative signal responsive to rotation of said first ring of magnetic material;
- and,
- a second sensor that generates a second position indicative signal responsive to rotation of said second ring of magnetic material.
9 more elements
Dependencies are inferred from the claim text.