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Title:
MOTOR DEVICE
Document Type and Number:
Japanese Patent JP2016073135
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor device capable of accurately calculating a rotation angle of a rotor without using an encoder.SOLUTION: The motor device includes: a stator around which a plurality of coils are wound; the rotor having different polarities in a circumferential direction; first and second magnetic sensors which output signals of sinusoidal waves having a predetermined phase difference from each other in response to rotations of the rotor; and a calculation part for calculating the rotation angle of the rotor on the basis of the signals from the first and second magnetic sensors.SELECTED DRAWING: Figure 2

Inventors:
MURAKAMI TOMOKAZU
SASAKI TAKESHI
Application Number:
JP2014202111A
Publication Date:
May 09, 2016
Filing Date:
September 30, 2014
Export Citation:
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Assignee:
SHINANO KENSHI CO
International Classes:
H02K11/21; G01D5/245; H02K29/08
Domestic Patent References:
JP2012149909A2012-08-09
JP2013174605A2013-09-05
JP2002349137A2002-12-04
Attorney, Agent or Firm:
Shuhei Katayama
Kikuchi



 
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