本文针对运行模态参数识别（OMA）方法，进行了较为系统地介绍，并对增强功率谱频域分解（EFDD）、辅助变量法（Instrumental Variable）、SSI-Cov方法（Covariance-Driven Stochastic Subspace Identification）和SSI-Data方法...
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针对三维模型数据缺乏自然的频域分解算法，鲍虎军等人建立的三维模型平面参数化方法是将三维模型数据转化成二维数据进行处理，但是算法很复杂。
To overcome the difficult of 3D model's decomposing planar parameterization algorithm is proposed by Bao Hunjun, 3D data will be transformed to 2D data in this algorithm.
利用双正交小波基将齿轮的故障振动信号分解到时频域，并提取出齿轮的故障特征。
This paper mainly introduces that the fault vibrating signal of gears was decomposed into time-frequency domains by double-orthogonal wavelet analysis and the fault feature of gears was picked up.
利用频域-空间域分解法，建立桥梁运行模态识别方法。
Operational modal analysis method of bridge was built based on frequency domain and spatial domain decomposition.
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