Predictive Modelling Approach for a Piezoelectric Bistable Energy Harvester Architecture

Benhemou, Aya; Huguet, Thomas; Gibus, David; Martin, Camille Saint; Demouron, Quentin; Morel, Adrien; Roux, Émile; Charleux, Ludovic; Badel, Adrien

doi:10.1109/powermems56853.2022.10007567

Cited by 3 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2. This VEH (for more details on its design, see [29]) consists of buckled steel beams of length L to which a proof mass M is attached that can oscillate between two stable equilibrium positions, −xw and xw. The VEH is driven by a sinusoidal excitation with a driving frequency f d = ω d /2π and a constant acceleration amplitude A.…”

Section: Bistable Veh Modelmentioning

confidence: 99%

See 1 more Smart Citation

Optimized and Robust Orbit Jump for Nonlinear Vibration Energy Harvesting

Saint-Martin

Morel

Charleux

et al. 2023

Preprint

View full text Add to dashboard Cite

This paper introduces an optimized orbit jump strategy for nonlinear Vibration Energy Harvesters (VEHs). Nonlinear VEHs are a promising alternative to linear VEHs due to their broadband characteristics. However, they exhibit complex dynamical behaviors, including not only high-power inter-well orbits but also low-power intra-well orbits and chaos. The existence of low-power orbits in their dynamics can restrict their energy harvesting performance. In order to overcome this issue, this study investigates an orbit jump strategy that allows the VEH to transition from low-power intra-well orbits to high-power inter-well orbits. This strategy, based on varying the buckling level of a bistable VEH, has been previously studied but not yet optimized. In this study, we define an optimization criterion that maximizes both the effectiveness and robustness of the orbit jump strategy. We developed a Python CUDA code using GPU parallel computing to handle the large number of numerical resolutions of the nonlinear VEH model. Experimental tests were performed on a bistable VEH over a frequency range of 30 Hz, validating the numerical results obtained with the optimized orbit jump strategy. The results indicate that the energy consumption required for a successful orbit jump ranges between 0.2 mJ and 1 mJ, and can be restored within 0.2 s in the worst case. Experimental results show an average success rate of 48%, despite a variation of ±15% in the starting and ending times of the jump, leading to a robust and optimized orbit jump strategy. The proposed optimization procedure can be applied to other orbit jump strategies, and other types of nonlinear VEHs.

show abstract

Section: Bistable Veh Modelmentioning

confidence: 99%

“…(a) Schematic representation of the bistable VEH. (b) Experimental prototype from[29] with dynamics described by(1).…”

mentioning

confidence: 99%

Optimized and Robust Orbit Jump for Nonlinear Vibration Energy Harvesting

Saint-Martin

Morel

Charleux

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The nonlinear VEH considered in this study, shown in figure 6, was designed by Benhemou et al [14]. It consists of a bistable mechanical oscillator with mass M, composed of buckled steel beams of length L. The oscillator has two stable equilibrium positions located at x = ±x w .…”

mentioning

confidence: 99%

Combining orbit jump and potential wells optimizations for nonlinear vibration energy harvesters

Saint-Martin,

Morel,

Charleux

et al. 2023

Smart Mater. Struct.

View full text Add to dashboard Cite

Nonlinear vibration energy harvesters (VEHs) are widely used for scavenging vibrational energy due to their broadband behaviors. However, they exhibit multiple orbits of different powers for a given excitation, including low-power orbits that might limit their performance. To address this issue and enhance nonlinear VEHs performance, various studies have defined orbit jump strategies to transition from low-power to high-power orbits. Another way to maximize the power of nonlinear VEHs is to optimize their geometry by finely engineering their potential wells (PWs). In this letter, we propose an orbit jump strategy for bistable VEHs that combines the two latter approaches, i.e. that simultaneously optimizes their PWs while jumping from low-power to high-power orbits. This orbit jump strategy is optimized using a numerical criterion that takes into account the robustness of the jumps and the invested energy. The proposed orbit jump strategy has been experimentally validated for vibration frequencies between 30 and 60 Hz. It is shown that the proposed approach can increase the power by an average of 121 times over the considered frequency range. Compared to traditional orbit jump strategies, the proposed approach, which combines orbit jumping and PWs optimizations, increases by up to three times the harvested power.

show abstract