Structural control with tuned inertial mass electromagnetic transducers
Structural control with tuned inertial mass electromagnetic transducers
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DOI：
10.1002/stc.2059
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发表时间：
2018-02
影响因子：
5.4
通讯作者：
Takehiko Asai;Y. Araki;K. Ikago
中科院分区：
文献类型：
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作者：
Takehiko Asai;Y. Araki;K. Ikago
研究了调谐惯性质量电磁换能器(TIMET)在地震作用下应用于建筑结构的有效性。TIMET是最近提出的两种创新的结构控制装置，即调谐粘滞质量阻尼器和电磁换能器。TIMET由弹簧、滚珠丝杠机构产生的惯性质量以及由电机和电路组成的电磁换能器部分组成。弹簧的刚度被调整，使得惯性质量与振动的建筑物产生共振。这使得安装在电机上的电机能够有效地与惯性质量并联运行，并将振动能有效地转化为电能。结果，建筑物的振动迅速衰减，电能被储存起来。这些产生的能量可以重复使用，用于自供电控制系统、结构健康监测、应急电源等。本文通过对三层缩尺模型的数值模拟研究，探讨了TIMET的减振和能量收集能力，并探讨了TIMET在土木结构中的应用潜力。
This paper investigates the validity of the tuned inertial mass electromagnetic transducer (TIMET) applied to building structures subjected to seismic motions. The TIMET is a device inspired by two innovative structural control devices proposed recently, that is, tuned viscous mass damper and electromagnetic transducer. The TIMET consists of a spring, an inertial mass produced by a ball screw mechanism, and an electromagnetic transducer part composed of a motor and an electrical circuit. The stiffness of the spring is tuned such that the inertial mass resonates with the vibrating building. This makes the motor installed in parallel with the inertial mass run up in an efficient way, and the vibration energy is converted to electrical energy effectively. As a result, vibration of the building decays fast and electrical energy is stored. This generated energy that is reusable for the self‐powered control systems, structural health monitoring, emergency power source, and so on. In this paper, through numerical simulation studies employing the scaled three‐story building model proposed for benchmark studies, the vibration reduction and energy harvesting capabilities of the TIMET is explored and the application potentiality to civil structures is discussed.