Angle detection device and angle detection method
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United States of America Patent
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Jun 13, 2017
Grant Date -
Mar 12, 2015
app pub date -
Aug 29, 2014
filing date -
Sep 12, 2013
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Abstract
An angle detection device includes: first and second rotation measuring instruments; an anomaly detection unit detecting occurrences of anomalies in the first and second rotation measuring instruments; and a switching interpolation unit configured to select a first angle signal and a first angular speed signal and output as a third angle signal and a third angular speed signal when the first rotation measuring instrument is normal, and to perform switching so that a second angle signal and a second angular speed signal are output as the third angle signal and the third angular speed signal while performing interpolation so that the difference between the first angle signal and the second angle signal is reduced stepwise if the second rotation measuring instrument is normal when an anomaly has occurred in the first rotation measuring instrument.
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