TY - JOUR
T1 - Modeling and parametric study of a force-amplified compressive-mode piezoelectric energy harvester
AU - Yang, Zhengbao
AU - Zu, Jean
AU - Luo, Jun
AU - Peng, Yan
N1 - Publisher Copyright:
© The Author(s) 2016.
PY - 2017/2/1
Y1 - 2017/2/1
N2 - Piezoelectric energy harvesters have great potential for achieving inexhaustible power supply for small-scale electronic devices. However, the insufficient power-generation capability and the narrow working bandwidth of traditional energy harvesters have significantly hindered their adoption. To address these issues, we propose a nonlinear compressive-mode piezoelectric energy harvester. We embedded a multi-stage force amplification mechanism into the energy harvester, which greatly improved its power-generation capability. In this article, we describe how we first established an analytical model to study the force amplification effect. A lumped-parameter model was then built to simulate the strong nonlinear responses of the proposed energy harvester. A prototype was fabricated which demonstrated a superior power output of 30 mW under an excitation of 0.3g (g = 9. 8 m/s2). We discuss at the end the effect of geometric parameters that are influential to the performance. The proposed energy harvester is suitable to be used in low-frequency weak-excitation environments for powering wireless sensors.
AB - Piezoelectric energy harvesters have great potential for achieving inexhaustible power supply for small-scale electronic devices. However, the insufficient power-generation capability and the narrow working bandwidth of traditional energy harvesters have significantly hindered their adoption. To address these issues, we propose a nonlinear compressive-mode piezoelectric energy harvester. We embedded a multi-stage force amplification mechanism into the energy harvester, which greatly improved its power-generation capability. In this article, we describe how we first established an analytical model to study the force amplification effect. A lumped-parameter model was then built to simulate the strong nonlinear responses of the proposed energy harvester. A prototype was fabricated which demonstrated a superior power output of 30 mW under an excitation of 0.3g (g = 9. 8 m/s2). We discuss at the end the effect of geometric parameters that are influential to the performance. The proposed energy harvester is suitable to be used in low-frequency weak-excitation environments for powering wireless sensors.
KW - Energy harvesting
KW - amplification effect
KW - flexural motion
KW - nonlinear vibration
KW - piezoelectric
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U2 - 10.1177/1045389X16642536
DO - 10.1177/1045389X16642536
M3 - Article
AN - SCOPUS:85011835425
SN - 1045-389X
VL - 28
SP - 357
EP - 366
JO - Journal of Intelligent Material Systems and Structures
JF - Journal of Intelligent Material Systems and Structures
IS - 3
ER -