Title:
MACHINE TOOL, CONTROL DEVICE FOR MACHINE TOOL, AND CONTROL METHOD FOR MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2023/145368
Kind Code:
A1
Abstract:
In order to control the movement of a moving body with high precision, this machine tool is provided with: a feed drive unit for moving a moving body in the machine tool; a feedback control unit for carrying out feedback control of the feed drive unit in accordance with a state variable; a friction compensation unit that, in order to compensate for rolling friction generated in the feed drive unit, adds in advance, to a command value that is input to the feed drive unit, a friction compensation value obtained from measurement data about the rolling friction or a friction compensation value calculated using a rolling friction model; and an inverse response reduction unit for using the state variable of the feedback control unit to reduce an inverse response generated by the addition of the friction compensation value.
Inventors:
FUJIMOTO HIROSHI (JP)
HAYASHI TAKUMI (JP)
TERADA YUKI (JP)
ISAOKA YOSHIHIRO (JP)
HAYASHI TAKUMI (JP)
TERADA YUKI (JP)
ISAOKA YOSHIHIRO (JP)
Application Number:
PCT/JP2022/048116
Publication Date:
August 03, 2023
Filing Date:
December 27, 2022
Export Citation:
Assignee:
UNIV TOKYO (JP)
DMG MORI CO LTD (JP)
DMG MORI CO LTD (JP)
International Classes:
B23Q15/00; G05B19/404; B23Q15/24; G05B11/32; G05B11/36; G05D3/12
Foreign References:
| JP2019221032A | 2019-12-26 | |||
| JP2020027602A | 2020-02-20 | |||
| JP2010049599A | 2010-03-04 | |||
| JP2012108892A | 2012-06-07 | |||
| JP2021047556A | 2021-03-25 | |||
| JP5560068B2 | 2014-07-23 |
Other References:
HAYASHI TAKUMI; FUJIMOTO HIROSHI; ISAOKA YOSHIHIRO; TERADA YUKI: "Basic Study on Analysis and Suppression of Inverse Response Caused by Feedforward Friction Compensation of Ball-screw-driven Stage", 2021 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS (ICM), IEEE, 7 March 2021 (2021-03-07), pages 1 - 6, XP033892145, DOI: 10.1109/ICM46511.2021.9385642
HAYASHI, TAKUMI ET AL.: "ROMBUNNO. 2-11: Proposal of Control Method of Ball-screw-driven Stage for Suppressing Excessive Cutting in Machine Tool Using Initial Response of Non-zero-state Reset Controller", PROCEEDINGS OF THE IEE JAPAN INDUSTRY APPLICATIONS SOCIETY CONFERENCE; AUGUST 25, 2021 - 27, 2021, IEE JAPAN INDUSTRY APPLICATIONS SOCIETY, JAPAN, 18 August 2021 (2021-08-18) - 27 August 2021 (2021-08-27), Japan, pages 101 - 106, XP009548155
HAYASHI, TAKUMI ET AL.: "ROMBUNNO. 2-11: Proposal of Control Method of Ball-screw-driven Stage for Suppressing Excessive Cutting in Machine Tool Using Initial Response of Non-zero-state Reset Controller", PROCEEDINGS OF THE IEE JAPAN INDUSTRY APPLICATIONS SOCIETY CONFERENCE; AUGUST 25, 2021 - 27, 2021, IEE JAPAN INDUSTRY APPLICATIONS SOCIETY, JAPAN, 18 August 2021 (2021-08-18) - 27 August 2021 (2021-08-27), Japan, pages 101 - 106, XP009548155
Attorney, Agent or Firm:
KATO Takashi (JP)
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