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Shock and Vibration
Volume 2015, Article ID 916870, 7 pages
http://dx.doi.org/10.1155/2015/916870
Research Article

An Enhanced Piezoelectric Vibration Energy Harvesting System with Macro Fiber Composite

1State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi’an Jiaotong University, Xianning West Road, No. 28, Xi’an 710049, China
2Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Dengzhuang South Road, No. 9, Beijing 100094, China

Received 15 April 2015; Revised 7 July 2015; Accepted 12 July 2015

Academic Editor: Carlo Trigona

Copyright © 2015 Shuwen Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Self-power supply is a promising project in various applied conditions. Among this research area, piezoelectric material-based energy harvesting (EH) method has been researched in recent years due to its advantages. With the limitation of energy form acceptance range of EH circuit system, a sum of energy is not accessible to be obtained. To enlarge the EH quantity from the vibration, an enhanced piezoelectric vibration EH structure with piezoelectric film is developed in this work. Piezoelectric-based energy harvesting mechanism is primarily proposed in this work. The special-designed electric circuit for EH from macro fiber composite (MFC) is proposed and then analyzed. When the structure vibrates in its modes of frequencies, the experiments are developed to measure the EH effect. The energy harvested from the vibrating structure is analyzed and the enhanced effect is presented. The results indicate that, with the enhanced EH structure in this work, vibration energy from structure is obtained in a larger range, and the general EH quantity is enlarged.