An electromagnetic inerter-based vibration suppression device
An electromagnetic inerter-based vibration suppression device
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DOI：
10.1088/0964-1726/24/5/055015
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发表时间：
2015-04
影响因子：
4.1
通讯作者：
A. Gonzalez-Buelga;L. Clare;S. Neild;J. Z. Jiang;Daniel J. Inman
中科院分区：
文献类型：
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作者：
A. Gonzalez-Buelga;L. Clare;S. Neild;J. Z. Jiang;Daniel J. Inman
本文介绍了如何使用线性电机等电磁换能器来实现基于惯性的结构振动抑制装置。当电机轴移动时，传感器线圈两端会产生电压差。电压差与其两端之间的相对速度成正比。如果电路围绕换能器线圈闭合，则电磁换能器将根据洛伦兹原理施加与电流成比例的力。如果连接由具有适当配置的电容器、电感和电阻组成的电子电路，则反射回机械域的合成力相当于基于机械惯性的设备所实现的力。所提出的配置易于实施且用途广泛，提供了损耗可忽略不计的高质量转换系统。通过使用电磁装置，可以实现新一代减振器，例如在电领域，通过并联添加电气元件来合成多频或实时可调减振器相对不复杂。此外，通过在电路中使用电阻仿真器，部分吸收的振动能量可以转化为可用功率。这里使用实时动态子结构对电磁调谐惯性阻尼器 (E-TID) 进行实验测试。为了补偿线圈损耗，开发了电压补偿单元。该电压补偿单元需要电力，该电力是通过使用电阻仿真器从振动能量中收集而获得的。开发了功率平衡分析，以确保设备能够自给自足。使用这种方法获得了有希望的实验结果，并在本文中进行了介绍。这项研究的最终目标是开发自主电磁减振器，能够收集能量，将其转化为可用功率，并将其用于振动控制和健康监测。
This paper describes how an inerter-based device for structural vibration suppression can be realized using an electromagnetic transducer such as a linear motor. When the motor shaft moves, a difference of voltage is generated across the transducer coil. The voltage difference is proportional to the relative velocity between its two terminals. The electromagnetic transducer will exert a force proportional to current following the Lorentz principle if the circuit is closed around the transducer coil. If an electronic circuit consisting of a capacitor, an inductance and a resistance with the appropriate configuration is connected, the resulting force reflected back into the mechanical domain is equivalent to that achieved by a mechanical inerter-based device. The proposed configuration is easy to implement and very versatile, provided a high quality conversion system with negligible losses. With the use of electromagnetic devices, a new generation of vibration absorbers can be realized, for example in the electrical domain it would be relatively uncomplicated to synthesize multi-frequency or real time tunable vibration absorbers by adding electrical components in parallel. In addition by using resistance emulators in the electrical circuits, part of the absorbed vibration energy can be converted into usable power. Here an electromagnetic tuned inerter damper (E-TID) is tested experimentally using real time dynamic substructuring. A voltage compensation unit was developed in order to compensate for coil losses. This voltage compensation unit requires power, which is acquired through harvesting from the vibration energy using a resistance emulator. A power balance analysis was developed in order to ensure the device can be self sufficient. Promising experimental results, using this approach, have been obtained and are presented in this paper. The ultimate goal of this research is the development of autonomous electromagnetic vibration absorbers, able to harvest energy, convert it into usable power, and use it for vibration control and health monitoring.