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A Study on Vibration Attenuation of Structure Applied on Eddy Current Damper

A Study on Vibration Attenuation of Structure Applied on Eddy Current Damper Vibration occurs after the satellite was the attitude maneuvers. This vibration affects the solar panel, which is a flexible structure, and gives a disadvantage to the mission. To reduce this vibration, and eddy current damper is proposed as a passive attenuation method. Eddy current damper is a method of generating electromagnetic force through the relative motion of a permanent magnet magnetized in the longitudinal direction and a conductor, and suppressing the vibration of a structure by acting in the opposite direction to the motion direction. The structure selected in this study was constructed in the form of a hinged expansion and aimed at attenuation in the frequency band of interest rather than a method of reducing specific frequencies. Through this, the model suggested in the study was actually manufactured, a mathematical model for applying the eddy current damper was established and the attenuation coefficient according to the magnetic flux density and air gap of the magnet was calculated. Based on the derived coefficients, it was experimentally implemented and frequency response characteristics were experimentally obtained by specifying one of the four structures, and the vibration reduction ability according to the air gap was experimentally implemented. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Aeronautical and Space Sciences Springer Journals

A Study on Vibration Attenuation of Structure Applied on Eddy Current Damper

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References (19)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to The Korean Society for Aeronautical & Space Sciences 2022
ISSN
2093-274X
eISSN
2093-2480
DOI
10.1007/s42405-022-00495-y
Publisher site
See Article on Publisher Site

Abstract

Vibration occurs after the satellite was the attitude maneuvers. This vibration affects the solar panel, which is a flexible structure, and gives a disadvantage to the mission. To reduce this vibration, and eddy current damper is proposed as a passive attenuation method. Eddy current damper is a method of generating electromagnetic force through the relative motion of a permanent magnet magnetized in the longitudinal direction and a conductor, and suppressing the vibration of a structure by acting in the opposite direction to the motion direction. The structure selected in this study was constructed in the form of a hinged expansion and aimed at attenuation in the frequency band of interest rather than a method of reducing specific frequencies. Through this, the model suggested in the study was actually manufactured, a mathematical model for applying the eddy current damper was established and the attenuation coefficient according to the magnetic flux density and air gap of the magnet was calculated. Based on the derived coefficients, it was experimentally implemented and frequency response characteristics were experimentally obtained by specifying one of the four structures, and the vibration reduction ability according to the air gap was experimentally implemented.

Journal

International Journal of Aeronautical and Space Sciences – Springer Journals

Published: Nov 1, 2022

Keywords: Flexible structure; Eddy current damper (ECD); Vibration attenuation; Electromagnetic force (EMF)

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