Rotation angle detection device, rotation angle detection method and program
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United States of America Patent
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Feb 8, 2022
Grant Date -
Apr 16, 2020
app pub date -
Oct 11, 2019
filing date -
Oct 15, 2018
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Abstract
Provided is a rotation angle detection device configured to detect a rotation angle of a magnetic field generation source, based on a magnetic field in at least two directions detected by a magnetic field detection device. The rotation angle detection device includes a correction value calculation unit configured to calculate a correction value of the rotation angle; an angle output unit configured to output an angle output signal indicative of the rotation angle of the magnetic field generation source, based on a magnetic field detection signal to be output from the magnetic field detection device and the correction value; and a filter unit capable of selecting a first filter characteristic, which is to be used for outputting the angle output signal, and a second filter characteristic, which is to be used for calculating the correction value and is different from the first filter characteristic.
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