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US 2022/0187387 A1Published application
Position sensor having harmonic distortion compensation
AssigneeAllegro MicroSystems, LLC
InventorsEmanuele Andrea Casu, Andrea Foletto
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Abstract
Methods and apparatus for determining a mechanical angle of a target from sine and cosine signals generated by inductive sensing elements by applying harmonic compensation on the sine and cosine signals using possible mechanical angles and analyzing results of the applied harmonic compensation. One of the mechanical angles can be selected based on the results of the applied harmonic compensation. In embodiments, a cost function can be used to select the mechanical angle.
Claims29
A method, comprising:
- determining a mechanical angle of a target from sine and cosine signals generated by sensing elements;
- applying harmonic compensation on the sine and cosine signals for possible mechanical angles;
- analyzing results of the applied harmonic compensation;
- and
- selecting one of the mechanical angles for harmonic compensation of the sine and cosine signals based on the results of the applied harmonic compensation.
2 more elements
A system, comprising:
- an integrated circuit (IC) package including circuitry to:
- receive sine and cosine signals from sensing elements;
- apply harmonic compensation on the sine and cosine signals for possible mechanical angles of a target;
- analyze results of the applied harmonic compensation;
- and
- select one of the mechanical angles for harmonic compensation of the sine and cosine signals based on the results of the applied harmonic compensation.
3 more elements
A system, comprising:
- means for receiving sine and cosine signals from sensing elements;
- and
- and means for processing the sine and cosine signals including:
- applying harmonic compensation on the sine and cosine signals for possible mechanical angles of a target;
- analyzing results of the applied harmonic compensation;
- and
- selecting one of the mechanical angles for harmonic compensation of the sine and cosine signals based on the results of the applied harmonic compensation.
4 more elements
Dependencies are inferred from the claim text.