Title:
MOTOR CONTROL DEVICE CAPABLE OF MEASURING TEMPERATURE OF ROTOR AND MOTOR HAVING THE SAME DEVICE
Document Type and Number:
Japanese Patent JP2017034811
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor control device capable of easily and accurately estimating the temperature of a rotor, and a motor having the motor control device.SOLUTION: A motor control device 21 includes: a sensor gear expansion amount estimation part 24 for estimating an expansion amount of a sensor gear 12 on the basis of a change amount of the intensity of an output signal of a magnetic type sensor 13; a sensor mounting table expansion amount estimation part 26 for estimating an expansion amount of a sensor mounting table 14 on the basis of a temperature detected by a temperature detector 15; a sensor gear expansion amount correction part 25 for correcting the estimated expansion amount of the sensor gear 12 by subtracting the estimated expansion amount of the sensor amounting table 14 from the estimated expansion amount of the sensor gear 12; and a rotor temperature estimation part 27 for estimating a temperature of a rotor 11 on the basis of the corrected expansion amount of the sensor gear 12.SELECTED DRAWING: Figure 1
Inventors:
YUKAWA FUMITO
Application Number:
JP2015151120A
Publication Date:
February 09, 2017
Filing Date:
July 30, 2015
Export Citation:
Assignee:
FANUC LTD
International Classes:
H02P29/00; G01K5/52
Domestic Patent References:
| JP2008170354A | 2008-07-24 | |||
| JPH10299688A | 1998-11-10 | |||
| JP2010220472A | 2010-09-30 | |||
| JP2001269828A | 2001-10-02 | |||
| JP2014073658A | 2014-04-24 |
Foreign References:
| US5255981A | 1993-10-26 |
Attorney, Agent or Firm:
Atsushi Aoki
Tetsuro Shimada
Shinji Mitsuhashi
Hirose Shigeki
Tatsuki Sone
Masahiro Tahara
Tetsuro Shimada
Shinji Mitsuhashi
Hirose Shigeki
Tatsuki Sone
Masahiro Tahara