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AssigneeConti Temic microelectronic GmbH
InventorsWolfgang Schulter, Stefan Rau, Helmut Weber, Thomas Gründer, Carsten Sensche
Estimating the term…
A device and a method for determining the current position of a rotor, particularly the angle of rotation of the rotor, of an electric motor, wherein said device determines the current position of the rotor using the fluctuations of the armature current or the armature voltage of the electric motor. The fluctuations of the armature current or the armature voltage are separated from the fluctuations of the motor current or the motor voltage with the help of an amplifier unit dependent on a controllable offset value. The offset value is changed according to the motor current or the motor voltage. By virtue of the device and the method, the fluctuations of the armature current or the armature voltage can be separated from the fluctuations of the motor current or the motor voltage over the full measurement range of the motor current or the motor voltage.
-11. (canceled)
A device for determining a current position of a rotor of an electric motor, wherein said device determines the current position of the rotor using fluctuations of an armature current or an armature voltage of the electric motor, wherein said device separates the fluctuations of the armature current or the armature voltage from fluctuations of motor current or motor voltage by aid of an amplifier unit that is dependent on a controllable offset value, wherein the device changes the offset value according to the motor current or the motor voltage or the fluctuations of the motor current or the motor voltage.
A method for determining a current position of a rotor of an electric motor comprising the steps of:
Dependencies are inferred from the claim text.