Energy harvesting of ambient vibrations using a combination of a mechanical structure (oscillator) and an electrical transducer has become a valuable technique for powering small wireless sensors. Bistable mechanical oscillators have recently attracted the attention of researchers as they can be used to harvest energy within a wider band of frequencies. In this study, the response of a bistable harvester to different forms of ambient vibration is analysed. In particular, harmonic noise, which has a narrow spectrum, similarly to harmonic signals, yet is stochastic, like broad-spectrum white noise, is considered. Links between bistable harvester responses and stochastic and vibrational resonance are explored.

This article is part of the theme issue ‘Vibrational and stochastic resonance in driven nonlinear systems (part 2)’.

使用机械结构（振荡器）和电换能器的组合来收集环境振动的能量已成为为小型无线传感器供电的一种有价值的技术。双稳态机械振荡器最近吸引了研究人员的注意力，因为它们可用于在更宽的频率范围内收集能量。在这项研究中，分析了双稳态收割机对不同形式的环境振动的响应。特别地，考虑了与谐波信号相似的具有窄频谱的谐波噪声，但是像广谱白噪声一样是随机的。探索了双稳态收割机响应与随机共振和振动共振之间的联系。

本文是主题问题“驱动的非线性系统中的振动和随机共振（第2部分）”的一部分。