Title:
TENSION ESTIMATION DEVICE, LIFE EVALUATION DEVICE, AND ROBOT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/113901
Kind Code:
A1
Abstract:
Provided are: a tension estimation device capable of accurately estimating the tension of a belt; a life evaluation device capable of accurately evaluating the life of a transmission mechanism, from the tension of the belt; and a robot system comprising these. The tension estimation device comprises: a transmission mechanism that transmits power via a belt; at least one motor disposed in the vicinity of the belt; a motor calorific value calculation unit that calculates the motor calorific value on the basis of at least one out of the current value or rotation speed for at least one motor; a frictional calorific value calculation unit that calculates the frictional calorific value of the transmission mechanism, on the basis of at least one among the current value or rotation speed for at least one motor and a friction coefficient for at least one shaft disposed in the vicinity of the belt; and a belt tension estimation unit that estimates the tension of the belt on the basis of the motor calorific value and the frictional calorific value.
Inventors:
SHIMIZU RYOUTA (JP)
Application Number:
PCT/JP2021/042594
Publication Date:
June 02, 2022
Filing Date:
November 19, 2021
Export Citation:
Assignee:
FANUC CORP (JP)
International Classes:
B25J17/00; B25J17/02; B25J19/06; G01M13/023
Foreign References:
| JP2015093360A | 2015-05-18 | |||
| JP6694016B2 | 2020-05-13 | |||
| JP2004020388A | 2004-01-22 | |||
| JP2005156394A | 2005-06-16 | |||
| US9205560B1 | 2015-12-08 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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