EXPERIMENTAL CHARACTERIZATION OF ELECTROMAGNETIC DAMPER
Vibration control of civil infrastructures using various damping devices has been extensively studied in the past three decades. Examples of such energy dissipation devices are friction dampers,bucldingrestrained braces,metallic yield dampers,viscous fluid dampers,and other types of passive or semiactive dampers. Recently a novel class of damping devices,termed electromagnetic dampers,has received growing interest. This damping device can mitigate structural vibration by converting structural kinetic energy to electrical energy. Therefore,it provides energy harvesting instead of energy dissipation if the electrical energy is properly stored. In spite of the promise of this novel device,the feasibility study on using electromagnetic devices for both structural vibration control and energy harvesting can be rarely found. In light of this,this paper carried out an experimental study of electromagnetic dampers through a series of dynamic testing. Two major characteristics—vibration damping coefficient and energy harvesting efficiency—have been systematically investigated,in which the effects of frequencies,amplitudes and different energy harvesting circuits were taken into account. The experimental results are followed by a brief discussion of the feasibility of using electromagnetic dampers in civil infrastructures.
Electromagnetic damper Energy dissipation Energy harvesting Damping coefficient Experimental study
Song-Ye Zhu Wen-Ai Shen You-Lin Xu Wing-Chung Lee
Department of Civil and Structural Engineering,The Hong Kong Polytechnic University,Hung Horn,Kowloon,Hong Kong,P.R. China
国际会议
The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)
广州
英文
2090-2096
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）