Offset calculation device and azimuth sensor therewith
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United States of America Patent
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Aug 25, 2020
Grant Date -
Jan 4, 2018
app pub date -
Dec 2, 2015
filing date -
Jan 16, 2015
priority date (Note) -
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Abstract
For triaxial magnetic detection data sequentially acquired as data points in a triaxial coordinate system, an offset calculation unit 30 calculates virtual data points P1′-P6′ by evenly parallel-translating each of data points P1-P7 so that a reference data point P7, for example, arbitrarily chosen from the data points P1-P7 coincides with an origin point O. A virtual offset point C′ for which the sum of the distances between the virtual data points P1′-P6′ and a curved surface H1 passing through the origin point O is minimized is then calculated. An offset value C for the magnetic detection data is then calculated by parallel-translating the virtual offset point C′ so as to restore the parallel-translated portion.
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