Rotation detector and rotation detection method
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United States of America Patent
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Aug 22, 2017
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N/A
app pub date -
Apr 9, 2015
filing date -
Oct 25, 2013
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Abstract
A rotation detector detecting rotation of a rotor, based on a signal produced according to rotation of the rotor, having a waveform according to a rotational cycle thereof, includes a signal obtaining unit to obtain two signals having phases different from each other; a vector operating unit to determine a vector according to a rotational angle of the rotor, based on the two signals; and a rotation detecting unit to detect rotation of the rotor, based on the vector. The two signals are produced from two elements located at positions farthest in a rotational angle of the rotor among plural rotation detecting elements located at positions different from each other.
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