Broadband piezoelectric power generation on high-energy orbits of the bistable Duffing oscillator with electromechanical coupling

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A review of energy harvesting using piezoelectric materials: state-of-the-art a decade later (2008–2018) (2019, neutral): “Analytical modeling and experimentation under chirp and band-limited white noise excitation showed that an output power density of 0.33 mW cm−3 could be harvested, which was significantly higher than the power density of the bistable systems introduced by Mann and Owens [227], Stanton et al [198], E”
M-shaped asymmetric nonlinear oscillator for broadband vibration energy harvesting: Harmonic balance analysis and experimental validation (2014, background): “Large-amplitude interwell oscillations [24] on high-energy orbits of the bistable configuration have been shown to increase the power output by an order of magnitude at several frequencies [38].”