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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27 , No. 3

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[ Article ]
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 3, pp. 194-202
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Jun 2018
Received 11 Apr 2018 Accepted 30 May 2018
DOI: https://doi.org/10.7735/ksmte.2018.27.3.194
위치 결정 시스템의 안정성 개선을 위한 와전류 감쇠기(Eddy Current Damper) 설계와 응용
조재훈^a ; 서창훈^b ; 김효영^a ; 전용호^b ; 이문구^b^{, *}


Design and Application of an Eddy-Current Damper for Improving Stability in Positioning Systems
Jae-Hoon Jo^a ; Chang-Hoon Seo^b ; Hyo-Young Kim^a ; Yong-Ho Jeon^b ; Moon-Gu Lee^b^{, *}
aResearch Institute of Sustainable Manufacturing System, Korea Institute of Industrial Technology, 89, Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan, Chungnam-do, 31056, Korea
bMechanical Engineering, Ajou University, 206, Worldcup-ro Yeongtong-gu, Suwon, Gyeonggi-do, 16499, Korea
Correspondence to : ^Tel.: +82-31-219-2338, Fax: +82-31-219-1611, E-mail address:*moongulee@ajou.ac.kr (Moon Gu Lee).

Abstract

Air bearing-guided linear motion modules have so little friction that they are widely used for precision positioning systems. The module exhibits disturbance vibration that is difficult to control because the air bearings have too small a damping coefficient. In this paper, an eddy-current damper (ECD) is proposed for an air bearing-guided linear motion module to improve the vibration isolation characteristics. A Halbach magnet array is devised to increase the density of the magnetic flux of the ECD because a stronger magnetic field generates a greater damping force. A theoretical magnetic model of a Halbach magnet array is presented, and its working principle is investigated. In order to investigate the performance of the module, an experimental instrument with the module, ECD, and control devices was constructed. The authors compared the experimental data of the module’s positioning performance for the cases with and without the ECD.


Keywords: Eddy Current Damper, Vibration Suppression, 1-Axis System, Linear Motion, Air-bearing System

References


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