An experimental study on self-powered vibration control and monitoring system using electromagnetic TMD and wireless sensors
An experimental study on self-powered vibration control and monitoring system using electromagnetic TMD and wireless sensors
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DOI：
10.1016/j.sna.2012.04.011
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发表时间：
2012-06
影响因子：
4.6
通讯作者：
Wenai Shen;Songye Zhu;You‐lin Xu
中科院分区：
文献类型：
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作者：
Wenai Shen;Songye Zhu;You‐lin Xu
提出并验证了一种由摆式调谐质量阻尼器（TMD）、旋转电磁（EM）装置、能量收集电路（EHC）和无线智能传感器（WSS）组成的自供电振动控制与监测（SVCM）系统。再生式电磁TMD （EMTMD）作为系统的关键元件，能够将结构的振动能量转化为电能，具有减振和能量收集的双重功能。在EHC的帮助下，电能可以进一步储存，并用于为密切监测结构振动响应的WSS供电。通过振动台试验验证了所提出的SVCM系统的可行性，并在随机激励下对配备SVCM系统的单自由度结构模型进行了测试。从振动控制、能量收集和振动监测等方面讨论了SVCM系统的功能。实验结果表明，所提出的再生EMTMD装置能够为WSS提供再生的、经济的功率。在随机地面运动下，在均方根加速度为0.05g的情况下，收获的功率约为312.4mW。同时，对比结果表明，EMTMD使结构位移频响函数的峰值幅值降低了10dB。该研究表明，SVCM系统为无线传感技术相关的供电问题提供了一种新颖而有前途的解决方案，并将促进振动控制与监测系统的集成。
This paper proposed and validated a self-powered vibration control and monitoring (SVCM) system which consists of a pendulum-type tuned mass damper (TMD), a rotary electromagnetic (EM) device, an energy harvesting circuit (EHC) and a wireless smart sensor (WSS). As the key element in the system, the regenerative electromagnetic TMD (EMTMD) is able to convert vibration energy of structures to electrical energy, and thus plays dual functions, namely, vibration mitigation and energy harvesting. With the aid of EHC, the electrical energy can be further stored and used to power WSS that closely monitor structural vibration responses. The feasibility of the proposed SVCM system was validated via shaking table tests, in which a single-degree-of-freedom (SDOF) structural model equipped with the SVCM system was tested under random excitations. The functionality of the SVCM system was discussed with regard to the vibration control, energy harvesting and vibration monitoring performance. The experimental results revealed that the proposed regenerative EMTMD device can provide regenerative and economical power to WSS. The harvested power reaches about 312.4mW under random ground motions with root-mean-square (RMS) acceleration equal to 0.05g. Meanwhile, the comparison shows that the peak magnitude of the frequency response function of structural displacement is reduced by 10dB with the aid of the EMTMD. This study demonstrates that the SVCM system provides a novel and promising solution to the power supply problem associated with wireless sensing technology, and will stimulate the integration of vibration control and monitoring system.