Vibration control of a cable-stayed bridge using electromagnetic induction based sensor integrated MR dampers |
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Authors: | Sang-Won Cho Jeong-Hoi Koo Ji-Seong Jo In-Won Lee |
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Affiliation: | (1) Boundary Layer Wind Tunnel Lab., Univ. of Western Ontario, London, ON, Canada;(2) Dept. of Mechanical & Manufacturing Engineering, Miami University, Oxford, OH, USA;(3) POSCO Engineering & Construction Co. Ltd, Gyeonggi-do, Republic of Korea;(4) Korea Advanced Institute of Science and Technology, Daejeon, Korea |
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Abstract: | This paper presents a novel electromagnetic induction (EMI) system integrated in magnetorheological (MR) dampers: The added
EMI system converts reciprocal motions of MR damper into electiral energy (electromotive force or emf) according to the Faraday’s
law of electromagnetic induction. Maximum energy dissipation algorithm (MEDA) is employed to regulate the MR dampers because
it strives to simplify a complex design process by employing the Lyapunov’s direct approach. The emf signal, produced from
the EMI, provides the necessary measurement information (i.e., realtive velocity across the damper) for the MEDA controller.
Thus, the EMI acts as a sensor in the proposed MR-EMI system. In order to evaluate the performance and robustness of the MR-EMI
sensor system with the MEDA control, this study performed an extensive simulation study using the first generation benchmark
cable-stayed bridge. Moreover, it compared the performance and the robustness of proposed system with those of Clipped-Optimal
Control (COC) and Sliding Mode Control (SMC), which were previously studied for the benchmark cable-stayed bridge. The results
show that the MR-EMI system reduced the vibrations of the bridge structure more than those of COC and SMC and show more robust
performance than that of SMC. These results suggest that EMIs can be used cost-effective sensing devices for MR damper control
systems without compromising the performance of them. |
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Keywords: | Electromagnetic induction Magnetorheological damper Maximum energy dissipation algorithm |
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