在振动冲击三电能收获机中,用于更宽带的磁性可见性
Qais Qaseem1, Alwathiqbellah Ibrahim1
1Department of Mechanical Engineering, The University of Texas at Tyler, 3900 University Blvd., Tyler, TX 75799, USA.
Micromachines
|May 27, 2023
概括
本研究介绍了一种新的可变频率能量收割器,使用磁性非线性和 triboelectric 效应来扩大运行带宽. 改进的设计显著增加了来自各种频率的环境振动收集的能量.
科学领域:
- 收集能源 收集能源
- 材料科学 材料科学 材料科学
- 非线性动力学是一种非线性动力学.
背景情况:
- 环境振动提供了一种广泛的机械能量来源.
- 三电发电机 (TEG) 可以收获这种能量,但它们的有效性受到狭窄的运行带宽的限制.
- 传统的TEG很难在广泛的振动频率范围内有效地捕获能量.
研究的目的:
- 开发和研究具有扩大运行带宽的可变频率能源收获器.
- 通过整合磁性非线性来提高传统 triboelectric 收割机的效率.
- 为了使有效的能量扫除环境振动在广泛的激发频率的频谱.
主要方法:
- 一个带着尖端磁铁的悬臂梁与固定磁铁配置,以创建非线性磁力排斥力.
- 使用尖端磁铁作为顶部电极和带有聚甲基 (PDMS) 绝缘体的底部电极集成了一个 triboelectric 收割机.
- 用数值模拟和实验验证来分析在不同条件下的静态和动态行为.
主要成果:
- 在 triboelectric 收割机中集成磁性非线性和振动冲击显著增加了运行带宽.
- 该系统的自然频率可以通过调整磁铁之间的距离来调整,从而实现单稳定或双稳定振荡.
- 实验验证证了理论预测,显示与传统收割机相比,在值距离的频率带宽增加了120%.
结论:
- 非线性冲击驱动的 triboelectric 能量收获器有效地扩大了运行频率带宽.
- 这种方法增加了从环境振动中收集的能量量.
- 开发的可变频率能量收割机显示了在广泛的频率范围内有效地收集机械能量的潜力.
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