利用压电转换韩国高速列车振动的可行性研究

D. Song, C. Yang, S. Hong, Se Bin Kim, M. S. Woo, T. Sung
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引用次数: 9

摘要

在这项研究中,我们研究了应用压电将运行中的商用韩国高速列车的机械振动转换为有用电力的可行性。我们记录并分析了韩国高速列车(KTX)的振动。实验采用不同的悬臂梁厚度(0.25、0.6和1.0 mm)和不同的压电材料尺寸(10.0 × 10.0 × 0.5 mm3、20.0 × 10.0 × 0.5 mm3和30.0 × 10.0 × 0.5 mm3)对记录的随机频率和列车振动幅值的实际数据进行了实验。悬臂梁端部质量的增加减小了恒定振动时的固有共振频率范围,而随机振动时则没有减小。通过实验找到了最佳条件,即减小光束厚度和增加光束面积,而不是仅仅增加尖端质量。提高操作灵敏度最有效的方法是通过增加尖端质量、减小光束厚度和增加光束面积来降低谐振频率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Feasibility study on application of piezoelectricity to convert vibrations of Korea Train eXpress
In this study, we have investigated the feasibility of applying piezoelectricity to convert the mechanical vibrations of an operating commercial high-speed Korean train to useful electricity. We recorded and analyzed the vibrations of Korea Train eXpress (KTX). We experimented with different cantilever beam thicknesses (0.25, 0.6, and 1.0 mm) and different piezoelectric material dimensions (10.0 × 10.0 × 0.5 mm3, 20.0 × 10.0 × 0.5 mm3, and 30.0 × 10.0 × 0.5 mm3) on real data from recorded random frequencies and train vibration amplitudes. The addition of tip masses on the cantilever beam decreased the natural resonance frequency range when the vibrations were constant but not when they were random. The optimal condition was experimentally found, to involve decreasing the beam thickness and increasing the beam area rather than merely increasing the tip mass. The most effective method to improve the operational sensitivity was to decrease the resonance frequency by adding tip masses, decreasing beam thicknesses, and increasing beam areas.
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