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Parametric Study of Low Frequency Broadband rectilinear-to-rotary Vibrational Energy Harvesting

Transactions of Nanjing University of Aeronautics and Astronautics 2018年第1期35卷 1-9页

作者： Chen Jingfan Deng Wei Wang Ya Inman Dan Department of Mechanical Engineering Stony Brook University Department of Mechanical Engineering Texas A&M University Department of Aerospace Engineering University of Michigan

A parametric study of a high-power-density dual resonator for achieving low frequency broadband electromagnetic energy harvesting is *** dual resonator consists of a rectilinear oscillator(R_LO)performing magnetic levitation and a rotary oscillator(R_TO)performing electromagnetic coupling through a stator and a *** oscillators,coupled by magnetic forces generated by a set of arc permanent magnets,radially magnetized and centro-symmetrically fixed onto the R_LO and the rotor of the R_TO achieve the reciprocating-to-rotary motion conversion and frequency ***,the dual resonator is able to convert stochastic reciprocating motion into controllable rotation,provide intrinsic frequency up-conversion,use non-contact magnetic coupling to provide near loss-free energy transfer and be configured into specific applications to obtain and maintain high-energy orbits of multi-stable energy *** solely focusing on developing a dual resonator provides substantial benefits,its dynamic behavior is unclear,thus electromagnetic-dynamic governing equations are derived,and a curve fitting model of restoring torque of R_TO under different repulsive magnets configurations are developed to predict key characteristics and to improve performance of the electromechanical *** analysis is carried out for providing aquantitative guidance of customizing the harvester to achieve an optimal power density.

关键词： curve fitting model non-contact rectilinear-to-rotary motion transformation frequency up-conversion systematic modeling parametric study

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