Nonlinear energy sink (NES) conventionally designed for vibration control has been recently explored for energy harvesting purpose. To simplify the analysis, a pure resistive load is usually used in the evaluation of the performance of NES-based energy harvesting systems. This paper investigates the performance of an NES-based energy harvesting system interfaced to a synchronized charge extraction (SCE) circuit (EHNES-SCE). For the ease of analysis, the SCE interface circuit is simplified by the equivalent impedance method. An equivalent circuit model for system-level simulation of the EHNES-SCE system is also established to confirm the feasibility of using the simplified SCE circuit. Subsequently, with the simplified SCE circuit, approximate analytical solutions of the EHNES-SCE system are derived using the harmonic balance method and the performance of the EHNES-SCE system under harmonic excitation is investigated. With the established modelling and simulation tools, the influ...

中文翻译：

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基于带同步电荷提取接口电路的压电非线性能量吸收器的振动能量收集

常规上为振动控制而设计的非线性能量吸收器（NES）最近被用于能量收集目的。为了简化分析，通常在评估基于NES的能量收集系统的性能时使用纯电阻负载。本文研究了与同步电荷提取（SCE）电路（EHNES-SCE）接口的基于NES的能量收集系统的性能。为了便于分析，通过等效阻抗方法简化了SCE接口电路。还建立了用于EHNES-SCE系统级仿真的等效电路模型，以确认使用简化SCE电路的可行性。随后，借助简化的SCE电路，利用谐波平衡法推导了EHNES-SCE系统的近似解析解，并研究了EHNES-SCE系统在谐波激励下的性能。借助已建立的建模和仿真工具，...