Title:
ELECTRIC-MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/056142
Kind Code:
A1
Abstract:
This electric-motor control device (100) is provided with: an acceleration-command calculation unit (3) for calculating an acceleration command for an electric motor; a torque-command calculation unit (4) which, on the basis of the acceleration command and a prescribed moment-of-inertia value, calculates a torque command for the electric motor; a torque-correction-value calculation unit (6) which, on the basis of the torque command, and the electric motor position and/or the electric motor speed, estimates disturbance of the electric motor to calculate a torque correction value for the torque command; and a moment-of-inertia value changing unit (8) which changes the moment-of-inertia value on the basis of an estimated moment of inertia ratio, i.e. the ratio of the torque command to the torque correction value. As a result, a control system for controlling the electric motor is stabilized regardless of the moment-of-inertia ratio, and the response is made to be constant regardless of the load.
Inventors:
YOSHIURA YASUFUMI (JP)
KAKU YASUHIKO (JP)
KAKU YASUHIKO (JP)
Application Number:
PCT/JP2014/077269
Publication Date:
April 14, 2016
Filing Date:
October 10, 2014
Export Citation:
Assignee:
YASKAWA DENKI SEISAKUSHO KK (JP)
International Classes:
H02P29/00
Foreign References:
| JPH02123984A | 1990-05-11 | |||
| JP2000020104A | 2000-01-21 | |||
| JPH06284763A | 1994-10-07 | |||
| JPH10295092A | 1998-11-04 | |||
| JP2010142020A | 2010-06-24 | |||
| JP2013118817A | 2013-06-13 |
Attorney, Agent or Firm:
HARUKA PATENT & TRADEMARK ATTORNEYS (JP)
Patent business corporation far international patent firm (JP)
Patent business corporation far international patent firm (JP)
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