文档介绍：
非线性磁悬浮研究俘能特性理论分析#
严博,张希农,罗亚军**
(西安交通大学机械强度与振动国家重点实验室航天航空学院)
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摘要:本文提出了一种改进的非线性磁悬浮俘能装置,其由一对悬浮永磁体,两个上下固定
的永磁体,以及电磁线圈构成。当底部磁体受到激励扰动时,悬浮磁体将会产生振动,从而
电磁线圈中会产生感应电动势,从而将振动能量以电能收集在电路中。给出了单个永磁体模
型,并根据 Maxwell 方程建立了该俘能器的电磁耦合特性。此外,理论分析了电磁斥力。建
立非线性俘能系统,并分析了其频率响应特性,研究结构表明,非线性特性能有效提高俘能
能力。
关键词:非线性振动;俘能;磁悬浮;电磁
中图分类号:O322
Theoretical analysis of energy harvesting from the improved
nonlinear ic suspension
YAN Bo, ZHANG Xinong, LUO Yajun
(State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace,
Xi'an Jiaotong University)
Abstract: In this study, an improved nonlinear ic suspension device is investigated for the
energy harvesting. The harvester consists of a pair of the suspended s, two fixed s,
and an . As the bottom suffers a disturbance, the suspended s will
move which result in the generation of emf. Then, the vibrating energy can be harvested. The
modeling of permanent is carried out. The ic coupling coefficient of the
harvester is obtained according to Maxwell’s equation. Moreover, the theoretical analysis of the
ic repulsive force is conducted. The frequency response equation of the nonlinear system is
established. The results show the nonlinear characteristics can enhance the energy harvesting.
Key words: nonlinear vibration; energy havesting; ic suspension; ic
0 引言
近年来,振动俘能装置及其特性研究受到广泛关注[1],