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Nonlinear Dynamics of Pendulums System for Energy Harvesting

Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 139)

Abstract

In this paper dynamics of a parametric pendulums system operating in rotational regime has been investigated with a view of energy harvesting. The main idea is based on the conversion of the oscillatory motion of the oscillatory motion into rotation of pendulums [1]. Numerical, analytical and experimental studies have been undertaken on a parametric pendulum and a pendulum excited by a planar motion. They suggest the rotational motion is persisting and occurs for a large range of frequencies and excitation amplitudes, which are the main control parameters. These investigations reinforce the viability of this new concept of the energy conversion. A system of two pendulums has been modelled and analysed. Specifically, the dynamics of the parametric pendulums systems has been investigated numerically and experimentally focusing on synchronized rotational solutions. The target state is a synchronized counter rotation of both pendulums. A control strategy aiming to initiate and maintain the desired rotational responses, has been developed and verified numerically and experimentally.

Keywords

Parametric pendulum Coupled pendulums Synchronization Delayed-feedback control Wave energy extraction 

Notes

Acknowledgments

We would like to acknowledge the current and former members of the Centre for Applied Dynamics Research and our collaborators who have contributed to this research. AN would like to thank the Northern Research Partnership for financial support.

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Centre for Applied Dynamics ResearchUniversity of AberdeenAberdeenScotland, UK

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