吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (4): 1144-1148.doi: 10.13229/j.cnki.jdxbgxb201704019

• Orginal Article • Previous Articles     Next Articles

Performance-enhanced two-degree-of-freedom energy harvester for low frequency vibration utilizing corrugated cantilever beam

WANG Hai, YAO Gang, QIU Wan-qun, YANG Chun-lai, FU Bang-chen   

  1. School of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu 241000, China
  • Received:2016-03-23 Online:2017-07-20 Published:2017-07-20

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Abstract: Traditional Piezoelectric Energy Harvester (PEH) has high natural frequency and low electromechanical conversion efficiency. To overcome this problem a corrugate two-degree-of-freedom (2DOF) PEH is proposed. The energy harvesting characteristics are analyzed using theoretical modeling and numerical simulation. Results show that compared to 1DOF PEH and traditional 2DOF PEH, corrugate 2DOF PEH can achieve fifth order of resonance frequency in the range of 0 to 60 Hz. The fourth resonance frequency of the corrugate 2DOF PEH is 45.92 Hz, which is 419.9 Hz lower than that of 1DOF PEH, and 55.1 Hz lower than that of traditional 2DOF PEH. Meanwhile, the output voltage of the corrugate 2DOF PEH can be controlled as high as 28 V in the same condition, which is the highest voltage among the three harvesters.

Key words: mechanical design, piezoelectric energy harvesting, corrugated cantilevered beam, low frequency, two-degree-of-freedom

CLC Number: 

  • TH132
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