%0 Journal Article
%T Stochastic resonance mechanism for wideband and low frequency vibration energy harvesting based on piezoelectric cantilever beams<br>悬臂梁压电振子宽带低频振动能量俘获的随机共振机理研究
%A Chen Zhong-Sheng
%A Yang Yong-Min
%A <br>陈仲生
%A 杨拥民
%J 物理学报
%D 2011
%I 
%X A stochastic resonance mechanism of improving wideband and low frequency vibration energy harvesting of piezoelectric cantilever beam (PCB) is studied using the system nonlinearity. By adding a pair of rectangular permanent magnets, the structure of standard piezoelectric cantilever beam is improved. Results reveal that the improved PCB may be a bistable system under a nonlinear magnetic force and an appropriate distance between two magnets. Then a stochastic resonance phenomenon will happen by the input of wideband and low frequency stochastic vibrations. Under the condition of stochastic resonance, the electrical output of the improved PCB increases greatly. So the proposed method will be useful for extending the resonant band and improving the electrical output of a standard PCB.
%K piezoelectric cantilever beams
%K vibration energy harvesting
%K wideband and low frequency
%K stochastic resonance<br>压电悬臂粱
%K 振动能量俘获
%K 宽带低频
%K 随机共振
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=27C14E609A3E452CB30FE77E1DFECC90&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=DF92D298D3FF1E6E&sid=6C50075D74B9154D&eid=6C50075D74B9154D&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=15