Shock & Vibration, Aircraft/Aerospace, and Energy Harvesting, Volume 9 - Proceedings of the 33rd IMAC, A Conference and Exposition on Structural Dynamics, 2015
Shock & Vibration, Aircraft/Aerospace, and Energy Harvesting, Volume 9 - Proceedings of the 33rd IMAC, A Conference and Exposition on Structural Dynamics, 2015
复制标题
震惊
DOI：
10.1007/978-3-319-15233-2_21
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Ao W
中科院分区：
文献类型：
--
作者：
Ao W
电动执行器和电磁阻尼器（EMD）在机械系统中应用广泛。他们利用电磁感应概念来产生涡流和洛伦兹力，以提供振动抑制力。在本研究中，这些原理将用于土木工程结构的振动适用性控制。在本研究中使用了一个电动执行器，以及一个分流谐振电路，一个RLC谐振电路（一个简单的电子电路振荡器），需要与EMD级联以关闭电路并产生电阻尼力。EMD设置在构筑物与地面之间。振动结构的动能提供了激活emd的输入能量。h∞优化（最大响应最小化）和h∞优化（动能最小化）用于获得振动抑制性能，并与传统的调谐质量阻尼器（TMD）进行了比较。并联谐振电路（EMDS）的EMD具有相似的动态性能，在频域实现了将主结构的谐振振动幅值抑制到两个较低幅值峰值。因此，这项工作表明，EMDS原则上可以达到令人满意的抑振性能。
Electrodynamic actuators and electromagnetic dampers (EMD) are used extensively in mechanical systems. They utilise the electromagnetic induction concept to generate eddy current and Lorentz forces for providing vibration suppression forces. In this research, these principles will be developed for vibration serviceability control of a civil engineering structure.An electrodynamic actuator is used in this research, together with a shunt resonant circuit, an RLC resonant circuit (a simple electronic circuit oscillator) which is needed to cascade with the EMD for closing the circuit and generating electrical damping forces. The EMD is set between the structure and the ground. The kinetic energy of the vibrating structure provides the input energy to activate the EMD.H∞optimisation (minimisation of the maximum response) andH2optimisation (minimisation of kinetic energy) are used to obtain the vibration suppression performance, which is compared against a conventional tuned mass damper (TMD). The EMD with shunt resonant circuit (EMDS) can have similar dynamic performance, which achieves suppression of resonant vibration amplitude of the primary structure down to two lower amplitude peaks in the frequency domain. Hence, this work shows that the EMDS can in principle achieve satisfactory vibration suppression performance.