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集成传统传感器和激光多普勒振动计用于结构模态分析:一种创新的方法
Eva Martínez López1, Natalia García-Fernández1, F Pelayo1
1Department of Construction and Manufacturing Engineering, University of Oviedo, 33203 Gijón, Spain.
Sensors (Basel, Switzerland)
|January 28, 2026
概括
结合激光多普勒振动计 (LDV) 和加速度计的新混合系统为土木工程中的运行模式分析 (OMA) 提供了可行的解决方案. 这种非接触式方法增强了对大型或难以进入的结构的结构监测.
科学领域:
- 结构工程 结构工程
- 振动分析 振动分析
- 传感器技术 传感器技术
背景情况:
- 基于加速度计的传统系统在大型或难以进入的土木工程结构中面临局限性.
- 运营模式分析 (OMA) 对于理解结构动态和健康监测至关重要.
- 需要非接触式测量技术来克服部署的挑战.
研究的目的:
- 为了证明一个混合测量系统的可行性,将激光多普勒振动计 (LDV) 和加速度计集成在一起.
- 为了验证混合系统在民用结构运营模式分析 (OMA) 中的有效性.
- 提供一个全面的解决方案,用于动态分析,而不需要广泛的传感器部署.
主要方法:
- 开发了一种混合系统,将非接触式LDV (测量速度) 和传统加速度计结合起来.
- 在悬臂梁和实验室人行桥上进行了实验性测试.
- 对于加速,LDV速度数据是有差异的,而对于位移数据则是整合的,这使得与加速度计数据的结合成为可能.
- 为了数据处理和模式参数识别,使用了ARTeMIS Modal软件.
主要成果:
- 混合LDV加速仪系统成功地确定了两个测试结构的自然频率和振动模式.
- 该系统有效地捕获了结构的动态行为.
- 非接触式LDV测量促进了数据收集和反射目标的再利用.
结论:
- 混合LDV-加速仪系统是土木结构OMA的可行和有效的工具.
- 这种方法比传统方法提供了显著的优势,特别是在大型或难以进入的结构.
- 该系统为先进的结构健康监测和动态分析提供了有前途的解决方案.
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