### Abstract

Language | English |
---|---|

Number of pages | 10 |

Journal | AIP Advances |

Volume | 4 |

Issue number | 11 |

DOIs | |

Publication status | Published - 26 Nov 2014 |

### Fingerprint

### Keywords

- stochastic processes
- excitation energies
- permanent magnets
- oscillators
- mechanical energy

### Cite this

*AIP Advances*,

*4*(11). https://doi.org/10.1063/1.4903167

}

*AIP Advances*, vol. 4, no. 11. https://doi.org/10.1063/1.4903167

**On square-wave-driven stochastic resonance for energy harvesting in a bistable system.** / Su, Dongxu; Zheng, Rencheng; Nakano, Kimihiko; Cartmell, Matthew P.

Research output: Contribution to journal › Article

TY - JOUR

T1 - On square-wave-driven stochastic resonance for energy harvesting in a bistable system

AU - Su, Dongxu

AU - Zheng, Rencheng

AU - Nakano, Kimihiko

AU - Cartmell, Matthew P

PY - 2014/11/26

Y1 - 2014/11/26

N2 - Stochastic resonance is a physical phenomenon through which the throughput of energy within an oscillator excited by a stochastic source can be boosted by adding a small modulating excitation. This study investigates the feasibility of implementing square-wave-driven stochastic resonance to enhance energy harvesting. The motivating hypothesis was that such stochastic resonance can be efficiently realized in a bistable mechanism. However, the condition for the occurrence of stochastic resonance is conventionally defined by the Kramers rate. This definition is inadequate because of the necessity and difficulty in estimating white noise density. A bistable mechanism has been designed using an explicit analytical model which implies a new approach for achieving stochastic resonance in the paper. Experimental tests confirm that the addition of a small-scale force to the bistable system excited by a random signal apparently leads to a corresponding amplification of the response that we now term square-wave-driven stochastic resonance. The study therefore indicates that this approach may be a promising way to improve the performance of an energy harvester under certain forms of random excitation.

AB - Stochastic resonance is a physical phenomenon through which the throughput of energy within an oscillator excited by a stochastic source can be boosted by adding a small modulating excitation. This study investigates the feasibility of implementing square-wave-driven stochastic resonance to enhance energy harvesting. The motivating hypothesis was that such stochastic resonance can be efficiently realized in a bistable mechanism. However, the condition for the occurrence of stochastic resonance is conventionally defined by the Kramers rate. This definition is inadequate because of the necessity and difficulty in estimating white noise density. A bistable mechanism has been designed using an explicit analytical model which implies a new approach for achieving stochastic resonance in the paper. Experimental tests confirm that the addition of a small-scale force to the bistable system excited by a random signal apparently leads to a corresponding amplification of the response that we now term square-wave-driven stochastic resonance. The study therefore indicates that this approach may be a promising way to improve the performance of an energy harvester under certain forms of random excitation.

KW - stochastic processes

KW - excitation energies

KW - permanent magnets

KW - oscillators

KW - mechanical energy

U2 - 10.1063/1.4903167

DO - 10.1063/1.4903167

M3 - Article

VL - 4

JO - AIP Advances

T2 - AIP Advances

JF - AIP Advances

SN - 2158-3226

IS - 11

ER -