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US 9,866,159 B1Granted
Rotor control method and device
AssigneeArm Limited
InventorDavid Victor Pietromonaco
Life of this patent
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Abstract
Electric motors may include one or more sensors usable to determine rotor alignment and/or speed. A method and apparatus for rotor alignment and/or speed error detection and/or correction are proposed, such as using signals from one or more sensors. A method and apparatus for controlling stator tooth activation based, at least in part, on corrections and offsets is also disclosed.
Claims20
A method for an electric motor comprising:
- determining a difference between a time to tooth alignment and one or more error corrections;
- determining a pulse delay or a pulse width, or a combination thereof based, at least in part, on the determined difference;
- and
- transmitting one or more signals to at least one driver of the electric motor to drive a pulse to one or more coil windings of at least one stator tooth of a stator of the electric motor based at least in part on the determined pulse delay or the determined pulse width, or the combination thereof.
1 more element
An apparatus comprising:
- a stator having a plurality of stator teeth;
- at least one driver electrically coupled to one or more coil windings of at least one stator tooth of the plurality of stator teeth;
- at least one controller electrically coupled to the driver, the at least one controller to:
- determine a difference between a time to tooth alignment and one or more error corrections;
- determine a pulse delay or a pulse width, or a combination thereof based, at least in part, on the determined difference;
- and
- transmit one or more signals to the at least one driver to drive a pulse to the one or more coil windings of the at least one stator tooth based at least in part on the determined pulse delay or the determined pulse width, or the combination thereof.
4 more elements
An article comprising:
- a non-transitory computer readable medium with instructions stored thereon that when executed by a processor of a controller are to:
- determine a difference between a time to tooth alignment and one or more error corrections;
- determine a pulse delay or a pulse width, or a combination thereof based, at least in part, on the determined difference;
- and
- transmit one or more signals to at least one driver to drive a pulse to one or more coil windings of at least one stator tooth based at least in part on the determined pulse delay or the determined pulse width, or the combination thereof.
2 more elements
Dependencies are inferred from the claim text.