Title:
ESTIMATION DEVICE FOR ESTIMATING DRIVE STATE OF ELECTRIC MOTOR DISPOSED IN MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2022/131106
Kind Code:
A1
Abstract:
This estimation device comprises a calculation unit that calculates variables indicating the drive state of an electric motor of a machine tool on the basis of a simulation program. The simulation program is a program in which a first auxiliary variable relating to a load factor for estimating the drive state of the electric motor is added to a command statement of a machining program for driving the machine tool. The calculation unit calculates changes in the speed of the electric motor over time on the basis of output characteristics of the electric motor, inertia related to driving of the electric motor, and the first auxiliary variable.
Inventors:
KAMIYA YOHEI (JP)
IIJIMA KAZUNORI (JP)
IIJIMA KAZUNORI (JP)
Application Number:
PCT/JP2021/045189
Publication Date:
June 23, 2022
Filing Date:
December 08, 2021
Export Citation:
Assignee:
FANUC CORP (JP)
International Classes:
H02P29/00; G05B19/4069
Foreign References:
| JP2000235411A | 2000-08-29 | |||
| JPH10293605A | 1998-11-04 | |||
| JPH10111708A | 1998-04-28 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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