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US 11,114,925 B2Granted
Grouped tooth electric motor
AssigneeArm Limited
InventorDavid Victor Pietromonaco
Life of this patent
Estimating the term…
Abstract
An electric motor may comprise a rotor and a stator comprising rotor and stator teeth, respectively. A non-uniform angular spacing or grouping of rotor teeth may facilitate desired rotational speeds of the rotor.
Claims8
A method comprising:
- generating a first electromagnetic force of a first magnitude on a first stator tooth of a stator of an electric motor;
- and
- generating a second electromagnetic force of a second magnitude less than the first magnitude on a second stator tooth on the stator adjacent to the first stator tooth,
- wherein the first and the second electromagnetic forces have the same polarity, and
- wherein the first electromagnetic force provides a torque to one or more non-uniformly angularly spaced rotor teeth of a rotor of the electric motor.
2 more elements
A method comprising:
- generating a first electromagnetic force of a first magnitude on a first stator tooth of a stator of an electric motor;
- generating a second electromagnetic force of a second magnitude less than the first magnitude on a second stator tooth on the stator adjacent to the first stator tooth,
- wherein the first electromagnetic force provides a torque to one or more non-uniformly angularly spaced rotor teeth of a rotor of the electric motor;
- and
- generating a third electromagnetic force on a third stator tooth of the electric motor, wherein the third stator tooth is on the stator adjacent to the first stator tooth and further wherein the third electromagnetic force has a third magnitude approximately equal to the second magnitude.
2 more elements
A method comprising:
- generating a first electromagnetic force of a first magnitude on a first stator tooth of a stator of an electric motor;
- generating a second electromagnetic force of a second magnitude less than the first magnitude on a second stator tooth on the stator adjacent to the first stator tooth,
- wherein the first electromagnetic force provides a torque to one or more non-uniformly angularly spaced rotor teeth of a rotor of the electric motor,
- decreasing the first magnitude to yield a third magnitude;
- and
- increasing the second magnitude of the second electromagnetic force to yield a fourth magnitude, wherein the third magnitude is approximately half the fourth magnitude.
3 more elements
Dependencies are inferred from the claim text.