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<p>To examine the influence of piezoelectric ceramic placement on the power generation performance of piezoelectric vibrators, firstly, the strain and output voltage equations of the piezoelectric vibrator were analyzed and derived. Secondly, a piezoelectric cantilever beam model was constructed using SOLIDWORKS modeling software and imported into COMSOL Multiphysics simulation software for simulation. When the Z-axis-specified displacement of the free end of the cantilever beam was 1.8&#xa0;mm and the piezoelectric ceramics were in different patch positions, the stress–strain and output voltage of the piezoelectric vibrator were simulated and analyzed using this software. The simulation results indicate that when the piezoelectric ceramic is positioned 0&#xa0;mm from the fixed end, and a 7.5&#xa0;g mass block is attached to the free end, the maximum output voltage of the piezoelectric vibrator reaches 21.6&#xa0;V. Finally, an experimental platform was established to test the output characteristics of the piezoelectric vibrator at various patch positions of the piezoelectric ceramic. The experimental results demonstrate that the power generation of the piezoelectric vibrator improves when the piezoelectric ceramic is closer to the fixed end. Specifically, when the ceramic was positioned 0&#xa0;mm from the fixed end with a 7.5&#xa0;g mass block at the free end, the maximum output voltage was approximately 15.3&#xa0;V, accompanied by an output current of 0.057&#xa0;mA and an output power of 0.8721 mW.</p>

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Simulation and Experiment of the Effect of Patch Position of Piezoelectric Ceramics on the Power Generation of Piezoelectric Vibrators

  • 期刊论文

  • 发表日期：

    2025年1月3日

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  • Xiaochao Tian,
  • Yingyu Dai,
  • Zhenming Wang,
  • Defeng Niu,
  • Zhicheng Zhong,
  • Ning Ding

摘要

To examine the influence of piezoelectric ceramic placement on the power generation performance of piezoelectric vibrators, firstly, the strain and output voltage equations of the piezoelectric vibrator were analyzed and derived. Secondly, a piezoelectric cantilever beam model was constructed using SOLIDWORKS modeling software and imported into COMSOL Multiphysics simulation software for simulation. When the Z-axis-specified displacement of the free end of the cantilever beam was 1.8 mm and the piezoelectric ceramics were in different patch positions, the stress–strain and output voltage of the piezoelectric vibrator were simulated and analyzed using this software. The simulation results indicate that when the piezoelectric ceramic is positioned 0 mm from the fixed end, and a 7.5 g mass block is attached to the free end, the maximum output voltage of the piezoelectric vibrator reaches 21.6 V. Finally, an experimental platform was established to test the output characteristics of the piezoelectric vibrator at various patch positions of the piezoelectric ceramic. The experimental results demonstrate that the power generation of the piezoelectric vibrator improves when the piezoelectric ceramic is closer to the fixed end. Specifically, when the ceramic was positioned 0 mm from the fixed end with a 7.5 g mass block at the free end, the maximum output voltage was approximately 15.3 V, accompanied by an output current of 0.057 mA and an output power of 0.8721 mW.