基于Hilbert-Huang变换的结构损伤诊断

Structural Damage Detection by Hilbert-Huang Transform

对 Hilbert- Huang变换 (HHT)在结构损伤诊断中的应用进行了分析。 Hilbert- Huang变换是一种适用于非线性、非平稳信号 ,且具有自适应性的新的数据处理方法 ,将该方法应用于结构的反应分析 ,能有效地提取结构的损伤特征 ,从而对结构的健康状况进行诊断。

An application of Hilbert-Huang transform(HHT) to damage detection in civil engineering structures has been studied. HHT is a novel data analysis method which can be used in nonlinear, non-stationary data and it is very adaptive. With this method, the damage information can be extracted from the measured response data in a reliable way and the health conditions about the structure can then be monitored. Simulation results demonstrate its suitability and effectiveness.