In this paper we show the importance of double impact in an up-converting mechanism by using a resonant low-frequency driving beam across a high-frequency piezoelectric beam, to enhance the electrical output power in a vibration energy harvesting (VEH) system suitable for ambient vibrations. The main advantage of this device is its nearly constant output voltage between impacts compared to other VEH systems using up-converting mechanisms whose output voltages decay abruptly after impact. With the proposed design, the optimum electrical load of the system is substantially lower compared to traditional low-frequency VEH systems. This mechanism improves the energy transfer to some transducers and electronic interfaces with low input impedances, attaining optimal efficiency.

中文翻译：

---

基于双冲击的非线性压电能量收集新型上变频机制

在本文中，我们通过在高频压电梁上使用谐振低频驱动梁，以提高适用于振动能量收集（VEH）系统的电输出功率，表明了上转换机制中双重冲击的重要性。环境振动。与使用上变频机制的其他VEH系统相比，该设备在撞击之间的输出电压几乎恒定，而上变频机制在撞击后输出电压突然衰减。通过提出的设计，与传统的低频VEH系统相比，系统的最佳电负载大大降低。这种机制改善了能量以低输入阻抗传递到某些换能器和电子接口的能量，从而获得了最佳效率。