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초정밀 직선 스테이지의 6자유도 운동 오차 보정을 위한 미세 구동 스테이지 개발 및 성능 평가

Development and Performance Evaluation of a Fine Stage for Compensating 6-DOF Motion Errors of an Ultra-Precision Linear Stage

Journal of the Korean Society for Precision Engineering 2021;38(2):123-129.
Published online: February 1, 2021

1 한국생산기술연구원 정밀기계공정제어연구그룹

2 경북대학교 기계공학부

3 경일대학교 기계자동차공학부

1 Precision Mechanical Process and Control R&D Group, Korea Institute of Industrial Technology

2 School of Mechanical Engineering, Kyungpook National University

3 School of Mechanical and Automotive Engineering, Kyungil University

#E-mail: syang@knu.ac.kr, TEL: +82-53-950-6569
• Received: August 26, 2020   • Revised: September 26, 2020   • Accepted: September 29, 2020

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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    Journal of the Korean Society for Precision Engineering.2023; 40(11): 907.     CrossRef

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Development and Performance Evaluation of a Fine Stage for Compensating 6-DOF Motion Errors of an Ultra-Precision Linear Stage
J. Korean Soc. Precis. Eng.. 2021;38(2):123-129.   Published online February 1, 2021
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Development and Performance Evaluation of a Fine Stage for Compensating 6-DOF Motion Errors of an Ultra-Precision Linear Stage
J. Korean Soc. Precis. Eng.. 2021;38(2):123-129.   Published online February 1, 2021
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Development and Performance Evaluation of a Fine Stage for Compensating 6-DOF Motion Errors of an Ultra-Precision Linear Stage
Image Image Image Image Image Image Image Image
Fig. 1 Structure of the fine stage
Fig. 2 Structure of the compensating unit
Fig. 3 Positions of sensor probes on a reference mirror
Fig. 4 Abbe’s offset between the measuring unit and the compensating unit
Fig. 5 Workspace of the compensating unit
Fig. 6 The dual-servo stage equipped with developed fine stage
Fig. 7 Consecutive step motion of developed fine stage
Fig. 8 The 6-DOF motion errors during 20 mm step motion
Development and Performance Evaluation of a Fine Stage for Compensating 6-DOF Motion Errors of an Ultra-Precision Linear Stage
Parameter Value
px [μm] ± 7.5
py [μm] ± 7.5
pz [μm] ± 1.0
θx [arcsec] ± 8.2
θy [arcsec] ± 7.2
θz [arcsec] ± 65.0
Equipment Parameter Value
Capacitive sensor Range ± 100 μm
Linearity ± 60 nm, F.S.
Resolution 0.8 nm
Reference mirror Flatness ± 30 nm, F.S.
Length 220 mm
Optical encoder Scale pitch 20 μm
Interpolation 32,768 bits
Linearity ± 3 μm/m
Parameter w/o Compensation w Compensation
δxx [μm] 18.882 10.692
δyx [μm] 0.709 0.061
δzx [μm] 0.265 0.039
εxx [arcsec] 1.499 0.565
εyx [arcsec] 1.459 0.418
εzx [arcsec] 3.503 0.628
Table 1 Maximum drive ranges of the compensating unit
Table 2 Specification of the measuring instrument in experiments
Table 3 PV-Value of the 6-DOF error