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3 April 2008 Vibration suppression of beam by using magnet-coil
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Abstract
The magnet-coil was used for a passive eddy current damper and an electromagnetic actuator to suppress the vibration of cantilever beams. The magnet-coil system consists of a copper coil attached to the aluminum beam and a permanent magnet installed below the coil, and this conductive coil can be used passively and actively as a damper and an actuator. The effect of the coil shapes including a cylindrical tube, a square tube and a circular sheet was investigated to find an efficient magnet-coil system for the vibration suppression of the cantilever beams. Also, the results of the active control with a positive position feedback scheme were compared with those of the passive eddy current dampers with open and closed circuits. The experimental data showed that the tube type coils had much higher vibration suppression efficiency than the sheet type coil and the active vibration control strategy can be alternatively used to improve the electromagnetic damper system.
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Tai-Hong Cheng and Il-Kwon Oh "Vibration suppression of beam by using magnet-coil", Proc. SPIE 6926, Modeling, Signal Processing, and Control for Smart Structures 2008, 692618 (3 April 2008); https://doi.org/10.1117/12.775746
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