Achieving increased bandwidth for 4 degree of freedom self-tuning energy harvester

被引：30
|
作者：
Staaf, L. G. H. [1 ]
Smith, A. D. [1 ]
Kohler, E. [1 ]
Lundgren, P. [1 ]
Folkow, P. D. [2 ]
Enoksson, P. [1 ]
机构：
[1] Chalmers Univ Technol, Dept Microtechnol & Nanosci, Gothenburg, Sweden
[2] Chalmers Univ Technol, Dept Appl Mech, Gothenburg, Sweden
来源：
JOURNAL OF SOUND AND VIBRATION | 2018年 / 420卷
基金：
瑞典研究理事会;
关键词：
Energy harvesting; Piezoelectric; Intelligent wireless sensors; Selftuning; MASS; BEHAVIOR;
D O I：
10.1016/j.jsv.2018.01.045
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The frequency response of a self-tuning energy harvester composed of two piezoelectric cantilevers connected by a middle beam with a sliding mass is investigated. Measurements show that incorporation of a free-sliding mass increases the bandwidth. Using an analytical model, the system is explained through close investigation of the resonance modes. Resonance mode behavior further suggests that, by breaking the symmetry of the system, even broader bandwidths are achievable. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：165 / 173
页数：9
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