ANGLE SENSOR AND ANGLE SENSOR SYSTEM
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United States of America Patent
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Issued Date -
Dec 28, 2017
app pub date -
Jun 12, 2017
filing date -
Jun 24, 2016
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Abstract
An angle sensor includes a first to a fourth detection unit and an angle detection unit. Each of the first to the fourth detection unit generates two detection signals. The first to the fourth detection unit are arranged in a positional relationship that establishes predetermined phase relationships among the detection signals they generate. The angle detection unit performs operations using the detection signals to generate a first and a second signal in which an error component corresponding to a fifth or higher-order harmonic and an error component corresponding to a harmonic of the order other than the fifth order are lower than those in the detection signals. The angle detection unit then calculates a detected angle value on the basis of the first and the second signal.
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