结构模态参数识别的随机子空间法

Structural modal parameter identification appling stochastic subspace identification

随机子空间法(SSI)是时域识别的模态参数识别法,该法根据加权方法的不同可以有3种算法．通过 处理实桥动载实测数据,研究了这3种算法识别真实结构模态参数的问题．

The stochastic subspace identification (SSI) is a time domain identification method. There are three algorithms depending on how the input matrix is weighted. A real bridge has been chosen as a case study. The results have shown the differences between the three algorithms.