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DOI:	10.1371/journal.pone.0141299
论文题名:	Roles of the Excitation in Harvesting Energy from Vibrations
作者:	Hui Zhang; Tianwei Ma
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2015
发表日期:	2015-10-23
卷:	10, 期:10
语种:	英语
英文关键词:	Vibration ; Bandwidth (signal processing) ; Energy transfer ; Magnets ; Prototypes ; Graphite ; Optimization ; Vibration engineering
英文摘要:	The study investigated the role of excitation in energy harvesting applications. While the energy ultimately comes from the excitation, it was shown that the excitation may not always behave as a source. When the device characteristics do not perfectly match the excitation, the excitation alternately behaves as a source and a sink. The extent to which the excitation behaves as a sink determines the energy harvesting efficiency. Such contradictory roles were shown to be dictated by a generalized phase defined as the instantaneous phase angle between the velocity of the device and the excitation. An inductive prototype device with a diamagnetically levitated seismic mass was proposed to take advantage of the well established phase changing mechanism of vibro-impact to achieve a broader device bandwidth. Results suggest that the vibro-impact can generate an instantaneous, significant phase shift in response velocity that switches the role of the excitation. If introduced properly outside the resonance zone it could dramatically increase the energy harvesting efficiency.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0141299&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/21073
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

Files in This Item:

File Name/ File Size	Content Type	Version	Access	License
journal.pone.0141299.PDF（1752KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Department of Civil and Environmental Engineering, University of Hawai’i at Mānoa, Honolulu, Hawaii 96822, United States of America;Department of Civil and Environmental Engineering, University of Hawai’i at Mānoa, Honolulu, Hawaii 96822, United States of America

Recommended Citation:

Hui Zhang,Tianwei Ma. Roles of the Excitation in Harvesting Energy from Vibrations[J]. PLOS ONE,2015-01-01,10(10)

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