几乎零度悬浮用于降低水下电动力学传感器的共振频率
Shitao Sun1, Yuhan Bi1, Xi Zhang1,2
1School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
The Journal of the Acoustical Society of America
|February 12, 2026
概括
这项研究引入了用于水下电动传感器的新型准零刚度 (QZS) 机制. 该QZS系统实现了超低共振频率和增强的振动性能,对于专业应用至关重要.
科学领域:
- 机械工程 机械工程
- 声学 声学 在声学方面
- 振动分析 振动分析
背景情况:
- 水下电动传感器需要高静态负载能力和低共振频率.
- 传统的线性系统在实现两者的同时面临局限性.
研究的目的:
- 开发一种非线性支持机制,以提高传感器中超低频振动性能.
- 为了研究一个近零刚度 (QZS) 结构,以改善传感器动力学.
主要方法:
- 为传感器开发非线性动态模型.
- 使用平衡方法分析位移和声压水平反应.
- 通过撞击测试进行数值模拟和实验验证.
主要成果:
- QZS机制有效地降低了等效的刚度,同时保持了高的静态负载能力.
- 与线性系统相比,观察到显著降低的共振频率和改善的超低频振动行为.
- 实验验证证证实了降低的共振频率和增强的加速响应.
结论:
- 拟议的QZS悬浮机制成功实现了超低共振频率.
- 这项技术对水下超低频电动传感器应用具有重大潜力.
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