Performance improvement of the stochastic-resonance-based tri-stableenergy harvester under random rotational vibration

作     者：Tingting Zhang Yanfei Jin Yanxia Zhang Tingting Zhang;Yanfei Jin;Yanxia Zhang

作者机构：Department of MechanicsBeijing Institute of TechnologyBeijing 100081China Department of MathematicsXi’an University of Science and TechnologyXi’anShaanxi 710054China 

出 版 物：《Theoretical & Applied Mechanics Letters》 (力学快报（英文版）)

年 卷 期：2022年第12卷第5期

页      面：326-331页

核心收录：

学科分类：08[工学] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This work has been supported by the National Natural Science Foundation of China(Grant No.12072025) Beijing Natural Science 5 Foundation(Grant No.1222015) the Natural Science Basic Research Program of Shaanxi Province(Grant No.2022JQ-044) 

主　　题：Tri-stable energy harvesting Stochastic resonance Random rotational vibration Signal-to-noise ratio 

摘      要：In this paper,the stochastic-resonance-based tri-stable energy harvester(TEH)is proposed to enhance harvesting performance under random rotational *** electromechanical coupled system interfaced with a standard rectifier circuit driven by colored noise is *** stationary probability density function(SPDF)of the harvester is obtained by the improved stochastic ***,with the adiabatic approximation theory,the analytical expression of signal-to-noise ratio(SNR)for the TEH is deduced to characterize stochastic resonance(SR).To enhance direct current(DC)power delivery from a rotational TEH,the influences of system parameters on SR is *** obtained results suggest that there are damping-induced resonance and noise-intensity-induced SR in the tri-stable *** TEH has higher harvesting performance under the optimal *** is,the optimal parameter combinations can induce optimal SR and maximize harvesting ***,the stochastic-resonance-based TEH can be optimized to enhance energy harvesting through choosing the optimal parameter.