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Title |
Analysis of Control Performance in Gap Size of MR Damper
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Authors |
허광희(Heo) ; 전승곤(Gwang Hee) ; 서상구(Jeon) ; 김대혁(Seung Gon) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.1.41 |
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Keywords |
자기유변유체 댐퍼; 유로 폭; 자기유변유체; 준능동 제어장치; 소형 댐퍼 MR Damper; Gap Size; MR fluid; Semi- active; small Size Damper |
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Abstract |
In this study, the flow path width (Gap Size), which is the flow path of fluid, was selected differently among various factors that determine the Ccontrol Force of MR damper, and the change of Control Force was confirmed accordingly. For this purpose, two MR dampers with a Gap Size of 1.0mm and 1.5mm were fabricated, respectively, and dynamic load experiments were conducted according to changes in applied current and vibration conditions The experimental results showed that the minimum Control Force was 3.2 times higher than 1.5mm in the case of 1.0mm Gap Size, and the maximum Control Force was 2.3 times higher than 1.5mm in the case of 1.0mm Gap Size. In addition, the increased width of the Control Force according to applied current was 34N for Gap Size 1.0mm, and 12.7N for Gap Size 1.5mm. As the gap Size increased, the overall Control Force and the increase in the Control Force by the applied current decreased. Next, the dynamic range, which is a performance evaluation index of the semi-active Control device, was 2.3 on average under 1.0mm condition and 2.8 on average under 1.5mm condition, confirming the possibility of utilization as a semi-active Control device.
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