A non-ideal portal frame energy harvester controlled using a pendulum
- 257 Downloads
A model of energy harvester based on a simple portal frame structure is presented. The system is considered to be non-ideal system (NIS) due to interaction with the energy source, a DC motor with limited power supply and the system structure. The nonlinearities present in the piezoelectric material are considered in the piezoelectric coupling mathematical model. The system is a bi-stable Duffing oscillator presenting a chaotic behavior. Analyzing the average power variation, and bifurcation diagrams, the value of the control variable that optimizes power or average value that stabilizes the chaotic system in the periodic orbit is determined. The control sensitivity is determined to parametric errors in the damping and stiffness parameters of the portal frame. The proposed passive control technique uses a simple pendulum to tuned to the vibration of the structure to improve the energy harvesting. The results show that with the implementation of the control strategy it is possible to eliminate the need for active or semi active control, usually more complex. The control also provides a way to regulate the energy captured to a desired operating frequency.
KeywordsAverage Power European Physical Journal Special Topic Bifurcation Diagram Energy Harvester Passive Control
Unable to display preview. Download preview PDF.
- 3.D. Belato, J.M. Balthazar, H.I. Weber, D.T. Mook, Nonlinear Dynamics, Chaos, Control and Their Applications to Engineering Sciences 2, Vibrations with Measurements and Control, edited by J.M. Balthazar, P.B. Gonçalvez, J. Clayssen, 222 (1999)Google Scholar
- 6.A. Erturk, D.J. Inman, Piezoelectric Energy Harvesting (John Wiley & Sons, Ltd., 2011)Google Scholar
- 11.W. Heywang, K. Lubitz, W. Wersing, Piezoelectricity Evolution and Future of a Technology (Springer Series in Materials Science ISSN 0933-033x, Springer-Verlag Berlin Heidelberg, 2008)Google Scholar
- 13.I. Iliuk, J.M. Balthazar, A.M. Tusset, B.R. Pontes Jr., J.L.P. Felix, MATEC Web of Conferences, 08003 (2012)Google Scholar
- 14.N. Jalili, Piezoelectric-Based Vibration Control, From Macro to Micro/Nano Scale Systems (Springer Science Business Media, LLC., 2010)Google Scholar
- 20.S. Priya, D.J. Inman, Energy Harvesting Technologies (Springer Science Business Media, LLC., 2009)Google Scholar
- 21.D. Sado, M. Kot, J. Theoretical Appl. Mech. 45, 119 (2007)Google Scholar
- 26.A.M. Tusset, J.M. Balthazar, J.L.P. Felix, J. Vibr. Control, 1 (2012)Google Scholar