In this paper, the frequency broadband effect in vibration energy harvesting was studied numerically using a quasi-zero stiffness resonator with two potential wells and piezoelectric transducers. Corresponding solutions were investigated for system excitation harmonics at various frequencies. Solutions for the higher voltage output were collected in specific branches of the power output diagram. Both the resonant solution synchronized with excitation and the frequency responses of the subharmonic spectra were found. The selected cases were illustrated and classified using a phase portrait, a Poincaré section, and recurrence plot (RP) approaches. Select recurrence quantification analysis (RQA) measures were used to characterize the discussed solutions.
Figure 2. Bifurcation diagram for voltage output.
Joanna Iwaniec, Grzegorz Litak, Marek Iwaniec, Jerzy Margielewicz, Damian Gąska, Mykhaylo Melnyk, Wojciech Zabierowski
This paper was published in: MDPI, Energies 2021, 14, 3926
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|This work was supported by the program of the Ministry of Science and Higher Education in Poland under the project DIALOG 0019/DLG/2019/10 in the years 2019-2021.|