Rotating field sensor and angle determination method using the same
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United States of America Patent
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Jan 31, 2017
Grant Date -
Sep 17, 2015
app pub date -
Oct 7, 2014
filing date -
Mar 17, 2014
priority date (Note) -
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Abstract
A rotating field sensor includes four detection circuits and a computing unit. In the computing unit, defined are four first detection circuit groups each consisting of three detection circuits. Further, defined in each first detection circuit group are three second detection circuit groups each consisting of two detection circuits. The computing unit calculates an angle value for each of all the second detection circuit groups on the basis of the output signals of the two detection circuits, extracts one or more normal first detection circuit groups each of which is such one that all three angle values corresponding to the three second detection circuit groups fall within an angle range of a predetermined breadth, and determines an angle detection value on the basis of at least one of all angle values corresponding to all second detection circuit groups belonging to the one or more normal first detection circuit groups.
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