Title:
MOTOR CONTROL SYSTEM, MANIPULATOR SYSTEM, AND MOTOR CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2018/167915
Kind Code:
A1
Abstract:
The purpose of the present invention is to detect a failure of an encoder without installing a dedicated sensor. A motor control system (20) relating to the present invention is provided with: a motor (5); a position detection unit (6) that detects a rotation angle position (n) of the motor (5); a current control unit (8) that controls, on the basis of the rotation angle position (n) thus detected, a current value (I) of a current to be supplied to the motor (5); a current detection unit (10) that detects the current value (I) of the current to be supplied to the motor (5); a current fluctuation determining unit that determines whether there is a change in the current value (I) thus detected; a position fluctuation determining unit that determines whether there is a change in the rotation angle position (n) thus detected; and a failure determining unit that determines that there is a failure in the position detection unit (6), in the cases where it is determined that the current value (I) is changed, and the rotation angle position (n) is not changed.
Inventors:
KURIHARA KYOHEI (JP)
Application Number:
PCT/JP2017/010669
Publication Date:
September 20, 2018
Filing Date:
March 16, 2017
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
H02P29/024
Foreign References:
| JP2010022150A | 2010-01-28 | |||
| JP2006129636A | 2006-05-18 | |||
| JP5855423B2 | 2016-02-09 | |||
| JPH09140175A | 1997-05-27 |
Attorney, Agent or Firm:
UEDA, Kunio et al. (JP)
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