中国物理B ›› 2019, Vol. 28 ›› Issue (1): 17701-017701.doi: 10.1088/1674-1056/28/1/017701

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Harvesting base vibration energy by a piezoelectric inverted beam with pendulum

Jia-Nan Pan(潘家楠), Wei-Yang Qin(秦卫阳), Wang-Zheng Deng(邓王蒸), Hong-Lei Zhou(周红磊)   

  1. Department of Engineering Mechanics, Northwestern Polytechnical University, Xi'an 710072, China
  • 收稿日期:2018-08-16 修回日期:2018-10-04 出版日期:2019-01-05 发布日期:2019-01-05
  • 通讯作者: Wei-Yang Qin E-mail:qinweiyang@aliyun.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 11672237) .

Harvesting base vibration energy by a piezoelectric inverted beam with pendulum

Jia-Nan Pan(潘家楠), Wei-Yang Qin(秦卫阳), Wang-Zheng Deng(邓王蒸), Hong-Lei Zhou(周红磊)   

  1. Department of Engineering Mechanics, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2018-08-16 Revised:2018-10-04 Online:2019-01-05 Published:2019-01-05
  • Contact: Wei-Yang Qin E-mail:qinweiyang@aliyun.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 11672237) .

摘要:

We proposed a two-degrees-of-freedom inverted piezoelectric beam with pendulum to promote the performance of vibration energy harvesting. This configuration is composed of an inverted elastic beam and a pendulum attached to its free end. The electromechanical equations governing the nonlinear system were derived. The harmonic balance method (HBM) is applied to solve the equation and the results prove that there exists a 1:3 super-harmonic resonance. The simulation results show that owing to the particular nonlinearity, there appears a special bending effect in the amplitude-frequency response, i.e., bending right for the first natural frequency and left for the second natural frequency, which is beneficial for harvesting vibration energy. The HBM results are verified by the entity simulations. Furthermore, over a relatively wide range of power spectral density, it could reach a dense jumping and give a dense high pulse voltage.

关键词: stochastic excitation, energy harvesting, inverted piezoelectric beam, pendulum, bi-stable state

Abstract:

We proposed a two-degrees-of-freedom inverted piezoelectric beam with pendulum to promote the performance of vibration energy harvesting. This configuration is composed of an inverted elastic beam and a pendulum attached to its free end. The electromechanical equations governing the nonlinear system were derived. The harmonic balance method (HBM) is applied to solve the equation and the results prove that there exists a 1:3 super-harmonic resonance. The simulation results show that owing to the particular nonlinearity, there appears a special bending effect in the amplitude-frequency response, i.e., bending right for the first natural frequency and left for the second natural frequency, which is beneficial for harvesting vibration energy. The HBM results are verified by the entity simulations. Furthermore, over a relatively wide range of power spectral density, it could reach a dense jumping and give a dense high pulse voltage.

Key words: stochastic excitation, energy harvesting, inverted piezoelectric beam, pendulum, bi-stable state

中图分类号:  (Piezoelectricity and electromechanical effects)

  • 77.65.-j
05.40.-a (Fluctuation phenomena, random processes, noise, and Brownian motion)