The technique of energy harvesting, which captures the energy from ambient vibrations, has received increasing attention due to its potential to power low-powered wireless sensors. Therefore, it is important to reveal the nonlinear dynamic mechanism to design a high-performance energy harvester. This paper describes an energy harvester with the decoupled bistable potential (DBEH), in which the potential function can be controlled independently by the barrier height or the barrier width. The harmonic balance method (HBM) is used to obtain the theoretical solutions, and the Jacobian matrix is provided to determine their stability. Thirdly, this paper thoroughly discusses the influence of barrier height and width on output responses and the multi-solution range. Finally, numerical simulations observe the stochastic resonance (SR) phenomenon and the inverse SR phenomenon of the DBEH with Gaussian white noise injection. The SR phenomenon of the DBEH is applied to bearing fault diagnosis, effectively enhancing fault characteristics.

中文翻译：

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能量采集器的理论分析和潜在的工程应用

能量收集技术从环境振动中捕获能量，由于其为低功率无线传感器供电的潜力而受到越来越多的关注。因此，揭示非线性动力学机制对于设计高性能能量收集器非常重要。本文描述了一种具有解耦双稳态电位（DBEH）的能量收集器，其中电位函数可以通过势垒高度或势垒宽度独立控制。使用谐波平衡法（HBM）来获得理论解，并提供雅可比矩阵来确定其稳定性。第三，本文深入讨论了势垒高度和宽度对输出响应和多解范围的影响。最后，数值模拟观察了高斯白噪声注入的 DBEH 的随机共振（SR）现象和逆 SR 现象。 DBEH的SR现象应用于轴承故障诊断，有效增强故障特征。