一项关于近零刚度十字形磁悬浮隔离器磁悬浮力和振动减弱特征的研究
Jiafeng Wu1, Wentao Liu1, Yun Zhang2
1School of Mechanical Engineering, University of Jinan, Jinan 250022, People's Republic of China.
The Review of scientific instruments
|August 29, 2024
概括
这项研究调查了近零刚度的十字形磁铁隔离器 (CMIs),揭示了磁铁几何和空气间隙如何影响磁铁力和振动控制. 优化的设计提高了性能,以有效减轻振动.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
背景情况:
- 在许多工程应用中,振动隔离是至关重要的.
- 几乎零度的系统为振动阻尼提供了独特的优势.
- 十字形马格莱夫隔离器 (CMIs) 提供了一种新的振动隔离方法.
研究的目的:
- 为了分析近零刚度的十字形磁道隔离器 (CMIs) 的磁道力和振动减弱特征.
- 调查磁铁几何和空隙变化对CMI性能的影响.
- 通过实验测试来验证分析发现.
主要方法:
- 使用等效电荷理论分析计算磁力力和刚性.
- 开发一个系统传输函数来分析振动传输.
- 磁铁尺寸 (长度,宽度,高度) 和空气间隙的参数分析.
- 实验验证使用侧面,子冲击和随机激发.
主要成果:
- 增加的磁铁长度和宽度增强了磁铁浮动力,但减少了接近零的硬度位移范围和系统振幅/相位.
- 增加磁铁高度扩大了接近零的刚度范围,对振幅/相位的影响最小.
- 空气间隙变化以复杂的方式影响磁悬浮力,振幅,相位和接近零的刚度范围.
- 哈尔巴赫阵列磁铁高度变化对磁力有位置依赖的影响.
结论:
- 磁铁几何和空气间隙是调整CMI性能的关键参数.
- 在各种激发类型中,CMI表现出有效的振动减弱能力.
- 该研究提供了针对特定振动隔离需求优化CMI设计的见解.
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