On Integration of Vibration Suppression and Energy Harvesting Through Piezoelectric Shunting With Negative Capacitance
On Integration of Vibration Suppression and Energy Harvesting Through Piezoelectric Shunting With Negative Capacitance
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DOI：
10.1109/tmech.2023.3249635
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发表时间：
2023-10
期刊：
影响因子：
--
通讯作者：
Ting Wang;J. Dupont;Jiong Tang
中科院分区：
文献类型：
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作者：
Ting Wang;J. Dupont;Jiong Tang
虽然负电容（NC）元件在各种压电应用中具有增加表观机电耦合的潜力，但它通常需要电源，这可能抵消其益处。事实上，一直没有系统的分析压电电路的数控功耗。在这篇文章中，我们研究的组合效应的NC电路的集成设计的被动振动抑制和能量收集与LC谐振分流。我们首先进行一个有代表性的数控电路的功耗分析，并分析其对压电能量收集的影响。然后，我们探讨通过LC分流器与NC元件的振动抑制和能量采集器的净发电量之间的权衡。它被确定，存在一个NC值的范围内，振动抑制性能得到提高，而净发电量仍然是积极的。这有效地产生了一个自我可持续的振动抑制增强计划与NC元素。相关的数值和实验研究证实了这一新发现。
While negative capacitance (NC) element has the potential of increasing the apparent electro-mechanical coupling in various piezoelectric applications, it generally requires a power supply which may negate its benefit. Indeed, there has been no systematic analysis of NC power consumption in piezoelectric circuitry. In this article, we investigate the combinatorial effect of NC circuit on an integrated design of passive vibration suppression and energy harvesting with LC resonant shunt. We first conduct a power consumption analysis of a representative NC circuit and analyze its influence on piezoelectric energy harvesting. We then explore the tradeoff between vibration suppression through LC shunt with NC element and the net power generation of the energy harvester. It is identified that there exists a range of NC values within which the vibration suppression performance is enhanced while the net power generation remains to be positive. This effectively yields a self-sustainable vibration suppression enhancement scheme with an NC element. Correlated numerical and experimental studies confirm this new finding.