Title:
MULTIPLE-ROTATION ENCODER
Document Type and Number:
Japanese Patent JP2015219096
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a multiple-rotation encoder that accurately corrects multi-rotation data even when the difference between the reference point of an angle detector and that of a multi-rotation detector is 90° or more, and align the reference points with each other.SOLUTION: An angle detector 100 detects a position within one rotation of a rotor. A multi-rotation detector 200 detects, as multi-rotation data, the rotation speed of the rotor using a three-phase signal having a phase difference of 60° generated in accordance with the rotation of the rotor. Multi-rotation data correcting means 5 corrects the multi-rotation data, on the basis of the three-phase signal having a phase difference of 60° and data on the position in one rotation. Data outputting means 6 outputs the data on the position in one rotation generated by the angle detector 100 and the corrected multi-rotation data.
Inventors:
ITO TATSUYA
Application Number:
JP2014102555A
Publication Date:
December 07, 2015
Filing Date:
May 16, 2014
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01D5/244; G01D5/249
Domestic Patent References:
| JPH05280999A | 1993-10-29 |
Foreign References:
| WO2013157279A1 | 2013-10-24 |
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune
Kume Teruyo
Hideo Kawamura
Hamada Hatsune
Kume Teruyo
Hideo Kawamura
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