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Patent Searching and Data


Title:
ROTATION DETECTOR
Document Type and Number:
WIPO Patent Application WO/2016/030947
Kind Code:
A1
Abstract:
This rotation detector (10) comprises the following: a rotor and stators comprising a rotor substrate (12) and stator substrates (11u, 11d), each of which is a multilayer substrate; a rotor coil (22) provided on the rotor substrate (12); and detection coils (21a, 21b) provided on the stator substrates (11u, 11d). The frequency of an excitation signal used by said rotation detector (10) is set so as to be higher than a prescribed frequency that would be required if the rotor and the stators were each made of a magnetic material.

Inventors:
KIMATA HIDEKI (JP)
TAKATSUKA TOMOSHI (JP)
Application Number:
PCT/JP2014/072168
Publication Date:
March 03, 2016
Filing Date:
August 25, 2014
Export Citation:
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Assignee:
SG CORP (JP)
International Classes:
G01B7/30
Foreign References:
JP2013083485A2013-05-09
JPS63158410A1988-07-01
JP2008275439A2008-11-13
JP2010197217A2010-09-09
JPH0266602A1990-03-06
JP2007285759A2007-11-01
Other References:
See also references of EP 3187818A4
Attorney, Agent or Firm:
SATO INTERNATIONAL PATENT FIRM (JP)
Patent business corporation Satow international patent firm (JP)
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