Position detection and monitoring
AssigneeInfineon Technologies Austria AG
InventorNitin Agarwal
Life of this patent
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Abstract
An apparatus includes a controller that controls a motor including multiple motor windings. During operation, the motor controller receives an error value indicating a difference between a current angular position of a rotor in the motor with respect to a reference angular position of the rotor. Based on the error value, the controller selects a first angle-to-torque converter function amongst multiple angle-to-torque converter functions in a piecewise angle-to-torque converter function. Via the first angle-to-torque converter function, the controller derives a torque value indicating a magnitude of torque to apply to the rotor. The controller applies the torque as indicated by the torque value to the rotor.
Claims25
An apparatus comprising:
- a motor controller operative to:
- produce an error value indicating a difference between a current angular position of a rotor in a motor with respect to a reference angular position of the rotor;
- based on the error value, select a first angle-to-torque converter function amongst multiple angle-to-torque converter functions;
- via the first angle-to-torque converter function, derive a torque value indicating a magnitude of torque to apply to the rotor;
- and
- via control of current through multiple windings of the motor, apply the magnitude of torque to the rotor as indicated by the torque value.
A method comprising:
- receiving a current angular position of a rotor in a motor with respect to a reference angular position of the rotor;
- based on the current angular position, selecting a first angle-to-torque converter function amongst multiple angle-to-torque converter functions;
- via the first angle-to-torque converter function, deriving a torque value indicating a magnitude of torque to apply to the rotor;
- and
- controlling current through multiple windings of the motor to apply the magnitude of torque to the rotor as indicated by the torque value.
A method comprising:
- producing multiple angle-to-torque converter functions;
- selecting portions of the multiple angle-to-torque converter functions;
- deriving a piecewise angle-to-torque converter function based on the selected portions of the multiple angle-to-torque converter functions;
- and
- implementing the piecewise angle-to-torque converter function to control rotation of a rotor of a motor.
Dependencies are inferred from the claim text.