Design and characterisation of a piezoelectric scavenging device with multiple resonant frequencies
Design and characterisation of a piezoelectric scavenging device with multiple resonant frequencies
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DOI：
10.1016/j.sna.2010.06.017
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发表时间：
2010-07-01
影响因子：
4.6
通讯作者：
Li, Lijie
中科院分区：
文献类型：
--
作者：
Chew, Zhengjun;Li, Lijie
本文报道了一种新型压电扫气装置的设计和特性，该装置在低频范围内具有多个谐振频率。该结构是由最容易接近的现成的压电悬臂梁。该设备的特点是使用自激和定制的振动台。对扫气装置的功率调节电路进行了设计和分析。实验结果表明，在100 ~ 1000 Hz的频率范围内，9梁结构至少有7个共振峰。在130 Hz的外部振动下测得的最大直流电压为3.58 V。实验表明，器件的输出功率与负载电阻有关，在10 k Ω电阻下测得9梁结构的输出功率为20.51 μ W。(C)2010爱思唯尔有限公司版权所有。
This paper reports design and characterisation of a new piezoelectric scavenging device that has multiple resonant frequencies in the low frequency range. The structure is constructed with the most accessible off-the-shelf piezoelectric cantilevers. The device has been characterised using both self-excitation and a customised shaker table. Power conditioning circuits for the scavenging device have been designed and analysed. The experimental results show that the 9-beam structure has at least 7 resonant peaks from frequency range of 100 Hz to 1000 Hz. A maximum DC voltage of 3.58 V has been measured subject to 130 Hz external vibration. Experiments show that the output power of the device depends on the load resistance, it is measured that the output power of the 9-beam structure is around 20.51 mu W with a 10 k Omega resistor. (C) 2010 Elsevier B.V. All rights reserved.