Title:
TEMPERATURE DETECTOR FOR MOVABLE ELEMENT OF MOTOR, AND OVERHEAT PROTECTOR FOR MOTOR
Document Type and Number:
Japanese Patent JP2015173572
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a temperature detector for a movable element of a motor and an overheat protector for the motor which improve estimation accuracy while making it easy to determine a coefficient for calculating an estimation temperature of the movable element.SOLUTION: A temperature detector for a movable element of a motor includes: an output calculation unit for calculating output of the motor; a rotation speed detection unit for detecting rotation speed of the motor; a storage unit for storing a coefficient that depends on the rotation speed; and a movable element temperature estimation unit for estimating a temperature of the movable element of the motor by using the output and the coefficient.
Inventors:
SENOO TATSUYA
Application Number:
JP2014049206A
Publication Date:
October 01, 2015
Filing Date:
March 12, 2014
Export Citation:
Assignee:
FANUC LTD
International Classes:
H02P27/06; G01K7/00; G01K13/08; H02H5/04; H02H6/00
Domestic Patent References:
| JP5149431B2 | 2013-02-20 | |||
| JP2009089531A | 2009-04-23 | |||
| JPH08182185A | 1996-07-12 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tomohiro Minamiyama
Kenichi Nakamura
Jun Tsuruta
Tomohiro Minamiyama
Kenichi Nakamura