中国物理B ›› 2023, Vol. 32 ›› Issue (9): 90201-090201.doi: 10.1088/1674-1056/acd621

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Dynamic responses of an energy harvesting system based on piezoelectric and electromagnetic mechanisms under colored noise

Yong-Ge Yang(杨勇歌)1, Yun Meng(孟运)1, Yuan-Hui Zeng(曾远辉)1, and Ya-Hui Sun(孙亚辉)1,2,†   

  1. 1 School of Mathematics and Statistics, Guangdong University of Technology, Guangzhou 510520, China;
    2 State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, China
  • 收稿日期:2023-02-28 修回日期:2023-04-06 接受日期:2023-05-17 发布日期:2023-08-28
  • 通讯作者: Ya-Hui Sun E-mail:yahsun@163.com
  • 基金资助:
    This work is supported by the National Natural Science Foundation of China (Grant Nos. 12002089 and 11902081), the Science and Technology Projects in Guangzhou (Grant Nos. 202201010326 and 2023A04J1323), and the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2023A1515010833).

Dynamic responses of an energy harvesting system based on piezoelectric and electromagnetic mechanisms under colored noise

Yong-Ge Yang(杨勇歌)1, Yun Meng(孟运)1, Yuan-Hui Zeng(曾远辉)1, and Ya-Hui Sun(孙亚辉)1,2,†   

  1. 1 School of Mathematics and Statistics, Guangdong University of Technology, Guangzhou 510520, China;
    2 State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2023-02-28 Revised:2023-04-06 Accepted:2023-05-17 Published:2023-08-28
  • Contact: Ya-Hui Sun E-mail:yahsun@163.com
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (Grant Nos. 12002089 and 11902081), the Science and Technology Projects in Guangzhou (Grant Nos. 202201010326 and 2023A04J1323), and the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2023A1515010833).

摘要: Because of the increasing demand for electrical energy, vibration energy harvesters (VEHs) that convert vibratory energy into electrical energy are a promising technology. In order to improve the efficiency of harvesting energy from environmental vibration, here we investigate a hybrid VEH. Unlike previous studies, this article analyzes the stochastic responses of the hybrid piezoelectric and electromagnetic energy harvesting system with viscoelastic material under narrow-band (colored) noise. Firstly, a mass-spring-damping system model coupled with piezoelectric and electromagnetic circuits under fundamental acceleration excitation is established, and analytical solutions to the dimensionless equations are derived. Then, the formula of the amplitude-frequency responses in the deterministic case and the first-order and second-order steady-state moments of the amplitude in the stochastic case are obtained by using the multi-scales method. The amplitude-frequency analytical solutions are in good agreement with the numerical solutions obtained by the Monte Carlo method. Furthermore, the stochastic bifurcation diagram is plotted for the first-order steady-state moment of the amplitude with respect to the detuning frequency and viscoelastic parameter. Eventually, the influence of system parameters on mean-square electric voltage, mean-square electric current and mean output power is discussed. Results show that the electromechanical coupling coefficients, random excitation and viscoelastic parameter have a positive effect on the output power of the system.

关键词: hybrid vibration energy harvesting, narrow-band random excitation, multi-scales method, viscoelastic material, stochastic bifurcation

Abstract: Because of the increasing demand for electrical energy, vibration energy harvesters (VEHs) that convert vibratory energy into electrical energy are a promising technology. In order to improve the efficiency of harvesting energy from environmental vibration, here we investigate a hybrid VEH. Unlike previous studies, this article analyzes the stochastic responses of the hybrid piezoelectric and electromagnetic energy harvesting system with viscoelastic material under narrow-band (colored) noise. Firstly, a mass-spring-damping system model coupled with piezoelectric and electromagnetic circuits under fundamental acceleration excitation is established, and analytical solutions to the dimensionless equations are derived. Then, the formula of the amplitude-frequency responses in the deterministic case and the first-order and second-order steady-state moments of the amplitude in the stochastic case are obtained by using the multi-scales method. The amplitude-frequency analytical solutions are in good agreement with the numerical solutions obtained by the Monte Carlo method. Furthermore, the stochastic bifurcation diagram is plotted for the first-order steady-state moment of the amplitude with respect to the detuning frequency and viscoelastic parameter. Eventually, the influence of system parameters on mean-square electric voltage, mean-square electric current and mean output power is discussed. Results show that the electromechanical coupling coefficients, random excitation and viscoelastic parameter have a positive effect on the output power of the system.

Key words: hybrid vibration energy harvesting, narrow-band random excitation, multi-scales method, viscoelastic material, stochastic bifurcation

中图分类号:  (Probability theory, stochastic processes, and statistics)

  • 02.50.-r
05.40.-a (Fluctuation phenomena, random processes, noise, and Brownian motion) 05.40.Ca (Noise)