Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/042670
Kind Code:
A1
Abstract:
Provided is technology that, in orientation control of an induction motor, makes it possible to detect correct acceleration/deceleration and stop a rotation shaft at a specific target position in a shorter time. The present invention is a motor control device that controls an induction motor for driving a rotation shaft and that performs orientation control to stop the rotating rotation shaft at a target position, said motor control device comprising: a speed comparison unit that calculates the difference between the actual speed of the rotation shaft and a speed command; a speed command calculation unit that, when the absolute value of the difference is less than a predetermined threshold value, changes the speed command so that the absolute value of the difference becomes greater than or equal to the threshold value; an acceleration command calculation unit that calculates an acceleration command during the orientation control on the basis of acceleration/deceleration which is calculated from the actual speed of the rotation shaft when the speed command has been changed; and a trajectory calculation unit that, on the basis of the acceleration command, calculates the speed command and/or a position command until the target position is reached.
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Inventors:
SHIMODA TAKAKI (JP)
IKAI SATOSHI (JP)
IKAI SATOSHI (JP)
Application Number:
PCT/JP2022/032017
Publication Date:
February 29, 2024
Filing Date:
August 25, 2022
Export Citation:
Assignee:
FANUC CORP (JP)
International Classes:
H02P3/06
Foreign References:
| JP2021069198A | 2021-04-30 | |||
| JP2011176906A | 2011-09-08 | |||
| JP2017123763A | 2017-07-13 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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