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The study investigates a model of a piezoelectric generatorPiezoelectric generator (PEG) (PEG) with active elements in the generator base. An axial version of the electric energy generator is presented. The generator consists of two base strips fixed to each other perpendicularly. One of the strips is horizontal, the other is vertical. There are four piezoelectric elements fixed in a T-shape at the ends of the horizontal strip. The generator is excited by a model impact shifting the upper end of the generator strip along its axial direction. The vertical strip has a unit that fixes movements in the transverse direction relative to its main axis. The assumed operating condition states the working generator under excitation by impact loadImpact load displacing the upper node of the vertical base strip at contact with a car wheel. The assumed operating frequency range is up to 30 Hz. Based on this, the analysis consisted of two stages. The first stage is studying the modal parameters and optimal selection of the PEGPiezoelectric generator (PEG) from the condition of not exceeding the first three generator frequencies of the 30 Hz limit. The analysis of the calculations showed that there are corresponding configurations of this generator. One of the options was investigated and its modal characteristics were calculated. The study of non-stationary oscillations of the selected option of the PEG showed the following. When the upper end of the PEGPiezoelectric generator (PEG) was displaced, the output total power P, caused by the impact loadImpact load, was 4.95 × 10–3 W for tr < 0.55 s and the active load R = 1 MΩ.

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Numerical Modeling Output Characteristics of Axial-Type Energy Generator with Active Piezoelectric Elements in Its Base Under Impact Loading

  • 会议论文

  • 发表日期：

    2025年

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  • I. A. Parinov,
  • A. V. Cherpakov,
  • Shun-Hsyung Chang

摘要

The study investigates a model of a piezoelectric generatorPiezoelectric generator (PEG) (PEG) with active elements in the generator base. An axial version of the electric energy generator is presented. The generator consists of two base strips fixed to each other perpendicularly. One of the strips is horizontal, the other is vertical. There are four piezoelectric elements fixed in a T-shape at the ends of the horizontal strip. The generator is excited by a model impact shifting the upper end of the generator strip along its axial direction. The vertical strip has a unit that fixes movements in the transverse direction relative to its main axis. The assumed operating condition states the working generator under excitation by impact loadImpact load displacing the upper node of the vertical base strip at contact with a car wheel. The assumed operating frequency range is up to 30 Hz. Based on this, the analysis consisted of two stages. The first stage is studying the modal parameters and optimal selection of the PEGPiezoelectric generator (PEG) from the condition of not exceeding the first three generator frequencies of the 30 Hz limit. The analysis of the calculations showed that there are corresponding configurations of this generator. One of the options was investigated and its modal characteristics were calculated. The study of non-stationary oscillations of the selected option of the PEG showed the following. When the upper end of the PEGPiezoelectric generator (PEG) was displaced, the output total power P, caused by the impact loadImpact load, was 4.95 × 10–3 W for tr < 0.55 s and the active load R = 1 MΩ.