We propose to use a shallow arched microbeam to design a compact 2D energy harvesting device using a single electrostatic transducer. The proposed design can transform any in-plane applied acceleration into motion of a variable capacitor whose movable electrode is linked to the shallow arched microbeam. A secondary electrode is placed to directly apply a force on the microbeam in order to tune its natural frequency to increase the amount of harvested energy. We derive the governing equations of the coupled system using the Hamilton’s principle. The associated nonlinear differential equations are solved using a Galerkin technique. The frequency response curves are obtained for accelerations in different directions under several applied voltages. The model and the design are validated using a finite element model. In a second modeling approach, the system is coupled to a conditioning circuit based on pump-charge technique. The coupled system is solved for different excitation frequencies. It was observed that the input voltage can be doubled after a 16 s excitation, and that almost the triple of this value can be obtained for longer excitation times. The performance of the system is assessed by comparing its performances with other designs found in the literature.

我们建议使用浅拱形微束来设计使用单个静电换能器的紧凑型2D能量采集设备。提出的设计可以将任何平面内施加的加速度转换为可变电容器的运动，该可变电容器的可动电极与浅拱形微束相连。放置辅助电极可直接在微束上施加力，以调节其自然频率以增加收集的能量。我们使用汉密尔顿原理导出耦合系统的控制方程。相关联的非线性微分方程使用Galerkin技术求解。获得了在几个施加电压下不同方向上的加速度的频率响应曲线。使用有限元模型对模型和设计进行验证。在第二种建模方法中，该系统耦合到基于泵浦充电技术的调节电路。解决了耦合系统的不同激励频率的问题。据观察，输入电压可以在16倍后加倍。 s的激励，并且更长的激励时间可以获得该值的几乎三倍。通过将系统的性能与文献中发现的其他设计进行比较，可以评估系统的性能。