摘要
提出了一种基于方型永磁体结构的新型非线性多稳态能量采集器,建立了多稳态能量采集器的动力学微分方程,分析了多稳态能量采集器的结构参数对稳态数目、势阱深度以及势阱间距的影响规律。结果表明:所提出的多稳态能量采集器可以通过调节结构参数来实现对系统稳态数目、势阱深度以及势阱间距的调控。同时,在谐波激励下,三稳态能量采集器的工作带宽要宽于双稳态;在随机激励下,三稳态进入阱间运动的噪声强度阈值要低于双稳态。
A new type of nonlinear multi-steady energy harvester based on square permanent magnet structure is proposed, and the dynamic differential equation of the multi-steady energy harvester is established.The effect rule of the structural parameters of the multi-steady energy harvester on the number of steady states, the depth of the potential well and the distance between the potential well are analyzed.Results show that the proposed multiple steady state energy harvester can be done by adjusting the structure parameters on the system steady state number, well depth and well spacing of regulation.At the same time, working bandwidth of three steady state energy harvester is wider than that of bi-stable state under harmonic excitation;under random excitation, the movement between the three steady state into the trap of noise intensity threshold is lower than the bi-stable state.
作者
唐驿宇
周振华
戴志辉
周民瑞
TANG Yiyu;ZHOU Zhenhua;DAI Zhihui;ZHOU Minrui(School of Automotive and Mechanical Engineering,Changsha University of Science&Technology,Changsha 410114,China;Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for Highperformance Mechanical Equipment,Changsha 410114,China;Hunan Provincial Key Laboratory of Mechanical Equipment Health Maintenance,Xiangtan 411201,China)
出处
《传感器与微系统》
CSCD
北大核心
2023年第3期60-64,共5页
Transducer and Microsystem Technologies
基金
国家自然科学基金资金项目(51705034)
湖南科技大学机械设备健康维护湖南省重点实验室开放基金资助项目(202001)
长沙市自然科学基金资助项目(KQ2014099)。
关键词
双稳态
三稳态
势阱间距
势阱深度
bi-stable state
tri-stable state
potential spacing
potential depth
