采用扩阶的Prony方法识别汽轮发电机基础的结构模态参数

IDENTIFICATION OF MODAL PARAMETER OF TURBODYNAMO FOUNDATION BY AUGMENTED PRONY METHOD

本文采用扩阶的Ｐｒｏｎｙ方法识别出了汽轮发电机基础的包括振型在内的模态参数，并与试验结果进行了对比分析。结果表明：对带有强干扰信号的复杂结构进行模态参数识别，扩阶的Ｐｒｏｎｙ方法是一种非常有效的方法。本次试验还首次成功地利用了吊装重物撞击汽轮发电机基础获得结构的自由衰减响应。

AbstractThis paper identifies modal parameter of turbo--dynamo foundation including mode shape by augmented prony method, and compares with the result of test anallysis. The result show, for modal parameter identification of complex structure with strong noise,augmeted prony method is a effective method. This paper also Successfully acquire structure's free attenuation response for the first time by impacting turbo-dynamo foundation.