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Optimal analysis, design and testing of an electromagnetic damper with resonantshunt circuit for vibration control of a civil structure

机译：带有共振分流电路的电磁阻尼器用于土木结构振动控制的优化分析，设计和测试

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Control of vibration serviceability problems in civil engineering structures has received considerable attention in recent years. Most of this has been focused on classical technologies such as tuned mass dampers, viscous dampers, viscoelastic dampers and friction pendulum systems, which in many cases are able to provide satisfactory vibration suppression performance. By contrast, electromagnetic actuators and electromagnetic dampers (EMD) have been more extensively used in mechanical applications as a means of attenuating unwanted vibration. In this study, the use of an EMD is investigated for vibration suppression of a civil engineering structure. A voice coil motor is utilised as an EMD in which the terminal ends are connected with a shunt circuit and resonant shunt circuit to improve the damping performance. Therefore, the basic resistor series circuit and resistor, inductor and capacitor (RLC) oscillating circuit are chosen in this application, with both the H∞ and H2 optimisation techniques being used to determine the required shunt circuit components. The resulting electromagnetic shunt damper (EMSD) is experimentally employed for enhancing the damping performance of a five storey aluminium frame structure under random and harmonic excitation. In line with the analysis and design of the damper, it is found that the EMSD experimentally demonstrates good vibration suppression performance.
机译：近年来，对土木工程结构中的振动可服务性问题的控制已引起广泛关注。其中大多数都集中在经典技术上，例如调谐质量阻尼器，粘性阻尼器，粘弹性阻尼器和摩擦摆系统，它们在许多情况下都能够提供令人满意的减振性能。相比之下，电磁致动器和电磁阻尼器（EMD）在机械应用中已得到更广泛的应用，以减轻不必要的振动。在这项研究中，研究了使用EMD来抑制土木工程结构的振动。音圈电动机被用作EMD，其末端与分流电路和谐振分流电路连接以改善阻尼性能。因此，在该应用中选择了基本的电阻器串联电路以及电阻器，电感器和电容器（RLC）振荡电路，同时使用H∞和H2优化技术来确定所需的并联电路组件。实验所得的电磁并联阻尼器（EMSD）用于增强五层铝框架结构在随机和谐波激励下的阻尼性能。根据减振器的分析和设计，发现EMSD在实验上显示出良好的减振性能。

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    Ao WK; Reynolds P;

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