Rotation angle measurement device and rotation angle measurement method
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United States of America Patent
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Oct 3, 2017
Grant Date -
Aug 18, 2016
app pub date -
Apr 26, 2016
filing date -
Feb 15, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A rotation angle measurement device includes: relative angle detection means including a reference support whose rotation is regulated in a fixed range in an arbitrary direction of a rotation axis, and a driving rotating body which is coupled to the reference support and is axially supported so as to be all-round rotatable with respect to the reference support, the relative angle detection means which detects a relative rotation angle of the rotating body with respect to the reference support; and non-contact angle detection means which detects a rotation angle of the reference support with reference to a position that does not contact with the rotating body and the reference support. This provides improved accuracy in indexing the rotation angle of a rotating moving shaft and easy installation onto the rotating moving shaft.
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