Focusing on this problem, a modal parameters identification algorithm based on left matrix fraction description of FRF was proposed.

针对该问题，提出一种基于频响函数左矩阵分式模型的模态参数识别方法。

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Considering the feature of left matrix fraction description, this article presents a construction method of the stabilization diagram by principal component analysis (PCA).

针对左矩阵分式模型的特点，给出了一种通过主分量分析(PCA)建立稳定图的方法。

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