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가속센서 데이터 기반 반복 학습 제어 적용 디스플레이 패널 이송 로봇 경로 오차 보상에 대한 연구

Study on Robot Path Error Compensation System Applied with ILC Using Acceleration Sensor

Journal of the Korean Society for Precision Engineering 2022;39(3):179-185.
Published online: March 1, 2022

1 삼익THK R&D센터

2 한국공학대학교 IT반도체융합공학과

3 한국공학대학교 메카트로닉스공학부

1 R&D Center, Samick THK Co., Ltd.

2 Department of Smart Manufacturing Engineering, Tech University of Korea

3 Department of Mechatronics Engineering, Tech University of Korea

#E-mail: khkim12@tukorea.ac.kr, TEL: +82-31-8041-0460
• Received: November 19, 2021   • Revised: December 21, 2021   • Accepted: January 3, 2022

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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  • Improving Path Accuracy and Vibration Character of Industrial Robot Arms with Iterative Learning Control Method
    MinSu Jo, Myungjin Chung, Kihyun Kim, Hyo-Young Kim
    International Journal of Precision Engineering and Manufacturing.2024; 25(9): 1851.     CrossRef

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Study on Robot Path Error Compensation System Applied with ILC Using Acceleration Sensor
J. Korean Soc. Precis. Eng.. 2022;39(3):179-185.   Published online March 1, 2022
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J. Korean Soc. Precis. Eng.. 2022;39(3):179-185.   Published online March 1, 2022
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Study on Robot Path Error Compensation System Applied with ILC Using Acceleration Sensor
Image Image Image Image Image Image Image Image Image Image Image Image Image Image
Fig. 1 Display panel transfer robot
Fig. 2 Display panel transfer robot based on Recurdyn
Fig. 3 Proposed ILC system block diagram
Fig. 4 Measurement point (Hand tip point) motion path
Fig. 5 X-axis motion position data
Fig. 6 Measured path error data by laser tracker (Y-axis)
Fig. 7 Measured path error data by laser tracker (Z-axis)
Fig. 8 Path error on simulation (Y-axis)
Fig. 9 Path error on simulation (Z-axis)
Fig. 10 Estimated path error in iterative learning (Y-axis)
Fig. 11 Compensation, path error in iterative learning (Y-axis)
Fig. 12 Compensation, path error in iterative learning (Z-axis)
Fig. 13 ILC result data on simulation (Z-axis)
Fig. 14 ILC result data on simulation (Y-axis)
Study on Robot Path Error Compensation System Applied with ILC Using Acceleration Sensor
Distance range [m] 60
Horizontal angle range Infinite
Vertical angle range [o] 52.1-77.9
One point repeatability 25 point@1.6 m:8 μs
Sample rate [sec] 16,000
Distance resolution [μm] 0.5
Distance accuracy (MPE) 16 μs +0.8 μs/m
Angle precision level accuracy
[arcseconds]
±2
Kpoff Kdoff KAcc Ts [ms]
Y-axis 0.6 0.002 0.001 200
Z-axis 0.6 0.002 0.0004 300
Y-axis Z-axis
Learning repeat number 20 19
Path error reduction rate [%] 98 94
Vibration amplitude reduction rate [%] 95 20
Table 1 Laser tracker specifications
Table 2 Variable values for the suggested ILC
Table 3 Performances with the suggested ILC