Two-layered piezoelectric bender device for micro-power generator

被引：43

作者：

Jeong, Soon-Jong ^{[1
]}

Kim, Min-Soo ^{[1
]}

Song, Jae-Sung ^{[1
]}

Lee, Hyun-Kyung ^{[2
]}

机构：

[1] Korea Electrotechnol Res Inst, Elect & Magnet Devices Grp, Chang Won 641120, South Korea

[2] Sangmyung Univ, Dept Ind Chem, Seoul 110743, South Korea

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2008年 / 148卷 / 01期

关键词：

Piezoelectric ceramics; Bender device; Micro-power harvesting;

D O I：

10.1016/j.sna.2008.07.007

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this study, we investigated the possibility of use of bender type piezoelectric devices. To match the external vibration frequency with the device resonant frequency, the various devices with different resonant frequency were chosen. The two-layered device consists of different thick layers, in which each layer shows different resonant frequency. The highest power was obtained under optimization of the capacitive nature of piezoelectric device which is connected to small storage capacitor and its impedance matching by selection of suitable resistive load. Under an external vibration acceleration of 0.1 G at 120 Hz, the device exhibited a peak-to-peak voltage of 2.0 V and a power of 0.5 mW in resonance mode. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：158 / 167

页数：10

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