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High-voltage synthetic inductor for vibration damping in resonant piezoelectric shunt
Journal of Vibration and Control ( IF 2.8 ) Pub Date : 2020-08-27 , DOI: 10.1177/1077546320952612
Kevin Dekemele 1 , Patrick Van Torre 2 , Mia Loccufier 1
Affiliation  

Resonant piezoelectric shunts are a well-established way to reduce vibrations of mechanical systems suffering from resonant condition. The vibration energy is transferred to the electrical domain through the bonded piezoelectric material where it is dissipated in the shunt. Typically, electrical and mechanical resonance frequencies are several orders apart. As such, finding a suitable high inductance component for the resonant shunt is not feasible. Therefore, these high inductance values are mimicked through synthetic impedances, consisting of operational amplifiers and passive components. A downside of these synthetic impedances is that standard operational amplifiers can only handle up to 30 V peak to peak and the state-of-the-art amplifiers up to 100 Vpp. However, as mechanical structures tend to become lighter and more flexible, the order induced voltages over the piezoelectric material electrode voltages increase above these limitations. In this research, a high-voltage synthetic inductor is proposed and built by combining the bridge amplifier configuration and the output voltage boost configuration around a single operational amplifier gyrator circuit, effectively quadrupling the range of the synthetic inductor to 400 Vpp. The impedance of the circuit over a frequency range is numerically and experimentally investigated. The synthetic inductor is then connected to a piezoelectric material bonded to a cantilever beam. Numerical and experimental investigation confirms the high-voltage operation of the implemented circuit and its suitability as a vibration damping circuit.



中文翻译:

谐振压电分流器中用于减振的高压合成电感器

谐振压电分流器是一种减少遭受谐振状态的机械系统振动的公认方法。振动能通过粘结的压电材料传递到电域,并在分流器中消散。通常,电气和机械共振频率相隔几个数量级。因此,为谐振分流器找到合适的高电感分量是不可行的。因此,这些高电感值可通过合成阻抗来模仿,合成阻抗包括运算放大器和无源元件。这些合成阻抗的缺点在于,标准运算放大器只能处理高达30 V的峰峰值,而最先进的放大器则可以处理高达100 Vpp的信号。但是,随着机械结构趋于更轻,更灵活,压电材料电极电压上的有序感应电压增加到这些限制以上。在这项研究中,提出了一种高电压合成电感器,它是通过将桥式放大器配置和输出电压升压配置围绕单个运算放大器回旋器电路相结合来构建的,从而有效地将合成电感器的范围提高了四倍,达到400 Vpp。在频率范围内对电路的阻抗进行了数值和实验研究。然后将合成电感器连接到结合到悬臂梁的压电材料上。数值和实验研究证实了所实施电路的高压操作及其作为减振电路的适用性。在这项研究中,提出了一种高电压合成电感器,它是通过将桥式放大器配置和输出电压升压配置围绕单个运算放大器回旋器电路相结合来构建的,从而有效地将合成电感器的范围提高了四倍,达到400 Vpp。在频率范围内对电路的阻抗进行了数值和实验研究。然后将合成电感器连接到结合到悬臂梁的压电材料上。数值和实验研究证实了所实施电路的高压操作及其作为减振电路的适用性。在这项研究中,提出了一种高电压合成电感器,它是通过将桥式放大器配置和输出电压升压配置围绕单个运算放大器回旋器电路相结合来构建的,从而有效地将合成电感器的范围提高了四倍,达到400 Vpp。在频率范围内对电路的阻抗进行了数值和实验研究。然后将合成电感器连接到结合到悬臂梁的压电材料上。数值和实验研究证实了所实施电路的高压操作及其作为减振电路的适用性。提出并通过在单个运算放大器回旋器电路周围结合桥式放大器配置和输出电压升压配置来构建高压合成电感器,从而将合成电感器的范围有效提高了三倍,达到400 Vpp。在频率范围内对电路的阻抗进行了数值和实验研究。然后将合成电感器连接到结合到悬臂梁的压电材料上。数值和实验研究证实了所实施电路的高压操作及其作为减振电路的适用性。提出并通过在单个运算放大器回旋器电路周围结合桥式放大器配置和输出电压升压配置来构建高压合成电感器,从而将合成电感器的范围有效提高了三倍,达到400 Vpp。在频率范围内对电路的阻抗进行了数值和实验研究。然后将合成电感器连接到结合到悬臂梁的压电材料上。数值和实验研究证实了所实施电路的高压操作及其作为减振电路的适用性。然后将合成电感器连接到结合到悬臂梁的压电材料上。数值和实验研究证实了所实施电路的高压操作及其作为减振电路的适用性。然后将合成电感器连接到结合到悬臂梁的压电材料上。数值和实验研究证实了所实施电路的高压操作及其作为减振电路的适用性。

更新日期:2020-08-28
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