In a previous work, the authors investigated, with promising results, the use of a piezoelectric element for the sake of energy harvesting from a rod assemblage subjected to varying normal force. However, in that occasion it was also observed that, depending on the initial voltage applied to the piezoelectric element, the system’s vibrations could actually be controlled, due to structural stiffening associated to the so-called inverse effect, inherent to piezoelectric coupling. In this work, this duality (energy harvesting and vibration control) is further exploited. It is shown that one or the other feature may arise in a parametric-instability scenario. The same trend was also captured with the aid of a reduced-order model.

中文翻译：

---

具有模态定位的参数激励系统中的压电振动控制器

在之前的一项工作中，作者研究了使用压电元件从受到不同法向力的杆组件收集能量的问题，并取得了令人鼓舞的结果。然而，在那种情况下，还观察到，根据施加到压电元件的初始电压，系统的振动实际上是可以控制的，这是由于与压电耦合固有的所谓逆效应相关的结构硬化。在这项工作中，进一步利用了这种二元性（能量收集和振动控制）。结果表明，在参数不稳定的情况下可能会出现一个或另一个特征。借助降阶模型也捕捉到了相同的趋势。