Method for compensating angular errors
AssigneeTDK-Micronas GmbH
InventorsJoerg FRANKE, Johannes GUTMANN
Life of this patent
Estimating the term…
Loading patent…
AssigneeTDK-Micronas GmbH
InventorsJoerg FRANKE, Johannes GUTMANN
Estimating the term…
A method for compensating angular errors when determining angular values of an arrangement with a permanent magnet and at least two magnetic field sensors. An evaluation signal corresponding to the angular values is formed from the two signals using an arc tangent function. Arrangement errors and errors of a measurement and evaluation unit change the shape of the evaluation signal and lead to an angular deviation in the evaluation signal. In order to minimize the angular deviation, values for correcting gain errors and/or values for correcting orthogonality errors of the signals are changed and values for the gain errors and/or values for correcting orthogonality errors are ascertained by determining a second harmonic in the evaluation signal and/or a third harmonic in the signals and/or density differences of measurement points of a Lissajous curve.
A method for compensating angular errors when determining angular values of an arrangement comprising a permanent magnet and at least two magnetic field sensors, the method comprising:
A method to determine rotation angle values, the method comprising:
Dependencies are inferred from the claim text.