To access the full text documents, please follow this link:

Analysis of bifurcation behavior of a piecewise linear vibrator with electromagnetic coupling for energy harvesting applications
El Aroudi, Abdelali; Ouakad, Hassen; Benadero García-Morato, Luis; Younis, Mohammad
Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. CEMAD - Caracterització elèctrica de materials i dispositius
Recently, nonlinearities have been shown to play an important role in increasing the extracted energy of vibration-based energy harvesting systems. In this paper, we study the dynamical behavior of a piecewise linear (PWL) spring-mass-damper system for vibration-based energy harvesting applications. First, we present a continuous time single degree of freedom PWL dynamical model of the system. Different configurations of the PWL model and their corresponding state-space regions are derived. Then, from this PWL model, extensive numerical simulations are carried out by computing time-domain waveforms, state-space trajectories and frequency responses under a deterministic harmonic excitation for different sets of system parameter values. Stability analysis is performed using Floquet theory combined with Filippov method, Poincar´e map modeling and finite difference method (FDM). The Floquet multipliers are calculated using these three approaches and a good concordance is obtained among them. The performance of the system in terms of the harvested energy is studied by considering both purely harmonic excitation and a noisy vibrational source. A frequency-domain analysis shows that the harvested energy could be larger at low frequencies as compared to an equivalent linear system, in particular, for relatively low excitation intensities. This could be an advantage for potential use of this system in low frequency ambient vibrational-based energy harvesting applications.
Àrees temàtiques de la UPC::Física
Floquet theory
Finite differences
Bifurcation theory
Energy harvesting
Nonlinear energy harvester
stability analysis
Poincaré map
Filippov method
Floquet theory
finite difference method
Diferències finites
Bifurcació, Teoria de la
Energia -- Captació

Show full item record

Related documents

Other documents of the same author

El Aroudi, Abdelali; Benadero García-Morato, Luis; Ouakad, Hassen; Younis, Mohammad
Moreno Font, Vanessa; El Aroudi, Abdelali; Benadero García-Morato, Luis
Benadero García-Morato, Luis; Moreno Font, Vanessa; Giral, R.; El Aroudi, Abdelali
Moreno Font, Vanessa; El Aroudi, Abdelali; Calvente, Javier; Giral, Roberto; Benadero García-Morato, Luis
El Aroudi, Abdelali; Moreno Font, Vanessa; Benadero García-Morato, Luis