Bandwidth widening in nonlinear electromagnetic vibrational generator by combined effect of bistability and stretching

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Podder, P.^1 ; Mallick, D.^1 ; Roy, S.^1

Microsystems Centre, Tyndall National Institute, Lee Maltings, Dyke Parade, Cork, Ireland^1

关键词: Bandwidth widening;    Bistables;    Combined configuration;    Combined effect;    Monostable;    Nonlinear force;    Novel concept;    Vibrational energies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012039/pdf
DOI  :  10.1088/1742-6596/557/1/012039

来源: IOP

【 摘 要 】

This work reports the novel concept of frequency response widening of vibrational energy harvesters exploiting the combined effects of bistable and monostable nonlinearities in a single device. The bistability is introduced into the system by repulsive arrangement of magnets, while monostable nonlinear force through the stretching is incorporated by large deformation of two-end-fixed cantilevers. The simulation results show wider bandwidth in the bistability and stretching combined configuration compared to the bistable only or the monostable stretching only configuration.