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Patent Searching and Data


Title:
ROTATION ANGLE DETECTOR AND TORQUE SENSOR
Document Type and Number:
WIPO Patent Application WO/2018/016145
Kind Code:
A1
Abstract:
A rotation angle detector (1) is provided with a multipolar magnet ring (2) that is magnetized so as to have multiple poles in the circumferential direction, at least one magnetic sensor group that comprises three magnetic sensors (3) that are disposed along the circumferential direction of the multipolar magnet ring (2) and output angle information having electrical angle phases separated by 120° phase difference intervals in accordance with the rotation of the multipolar magnet ring (2), and a calculation unit (4) for calculating the rotation angle of the multipolar magnet ring (2) on the basis of the angle information output from the three magnetic sensors (3) that compose a single magnetic sensor group.

Inventors:
KUWAHARA MASAKI (JP)
Application Number:
PCT/JP2017/015716
Publication Date:
January 25, 2018
Filing Date:
April 19, 2017
Export Citation:
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Assignee:
NSK LTD (JP)
International Classes:
G01D5/244; G01L3/10
Foreign References:
JP2012149909A2012-08-09
JP2013101023A2013-05-23
JP2012122963A2012-06-28
JP2011220848A2011-11-04
Other References:
See also references of EP 3396327A4
Attorney, Agent or Firm:
NAITOH Yoshiaki et al. (JP)
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