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一个一般化的费舍尔差异分析与适应性度调节,用于跨模型的振动状态监测在风力道
Zhiyuan Li1, Zhengjie Li1, Xinghao Chen1
1China Aerodynamics Research and Development Center, Mianyang 621000, China.
Sensors (Basel, Switzerland)
|January 28, 2026
概括
这项研究引入了一种新的通用健康指标 (HI),用于实时监测风洞中的振动. 该方法可以在不同模型中准确检测危险的气弹性不稳定性,从而提高结构安全性.
科学领域:
- 航空航天工程 航空航天工程
- 机械工程 机械工程
- 振动分析 振动分析
背景情况:
- 风洞测试对于空气动力学分析和结构完整性至关重要.
- 在测试过程中,诸如飞之类的气弹性不稳定性会带来重大风险.
- 当前的监控系统往往缺乏实时,模型不可知的能力.
研究的目的:
- 开发一种新的,通用的健康指标 (HI),用于实时的,无模型的振动监测.
- 改进危险振动状态和空气弹性不稳定的早期检测.
- 提高振动监测系统的跨模型适用性.
主要方法:
- 一个基于改进的费舍尔差别分析 (FDA) 框架的通用健康指标 (HI).
- 重构FDA的目标功能,以进行稳定与危险状态分类.
- 频率智能标准化和双模式正规化用于跨模型概括和灵敏度.
主要成果:
- 拟议的HI有效地区分了稳定和危险的振动状态.
- 频率标准化确保了跨模型的适用性.
- 双模式的度调节增强了对关键共振频率的灵敏度.
结论:
- 新的HI方法在早期检测危险振动方面表现出卓越的性能.
- 该方法提供了关键频段的清晰可解释性.
- 与现有技术相比,该方法在趋势性,稳定性和跨模型适应性方面具有优势.
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