Bidirectional energy-controlled piezoelectric shunt damping technology and its vibration attenuation performance

IF 3.4 Q1 ENGINEERING, MECHANICAL
Yipeng Wu, Quan Yuan, Kaibin Ren, Xin Shen, Hui Shen, Adrien Badel, Hongli Ji, Jinhao Qiu
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引用次数: 0

Abstract

Piezoelectric material-based semi-active vibration control systems may effectively suppress vibration amplitude without any external power supply, or even harvest electrical energy. This bidirectional electrical energy control phenomenon is theoretically introduced and validated in this paper. A flyback transformer-based switching piezoelectric shunt circuit that can extract energy from or inject energy into piezoelectric elements is proposed. The analytical expressions of the controlled energy and the corresponding vibration attenuation are therefore derived for a classical electromechanical cantilever beam. Theoretical predictions validated by the experimental results show that the structure vibration attenuation can be tuned from −5 to −25 dB under the given electrical quality factor of the circuit and figure of merit of the electromechanical structure, and the consumed power is in the range of −13 to 25 mW, which is a good theoretical basis for the development of self-sensing, self-adapting, and self-powered piezoelectric vibration control systems.

Abstract Image

双向能量控制压电分流阻尼技术及其减振性能
基于压电材料的半主动振动控制系统可以在没有任何外部电源的情况下有效抑制振动幅度,甚至还能收集电能。本文从理论上介绍并验证了这种双向电能控制现象。本文提出了一种基于反激变压器的开关压电分流电路,它可以从压电元件中提取能量或向压电元件注入能量。因此推导出了经典机电悬臂梁的受控能量和相应振动衰减的分析表达式。实验结果验证的理论预测表明,在给定电路的电品质因数和机电结构的优点系数下,结构振动衰减可在 -5 至 -25 dB 之间调节,消耗功率在 -13 至 25 mW 之间,这为开发自传感、自适应和自供电压电振动控制系统奠定了良好的理论基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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