Modal parameters identification based on noise rejection for MIMO signals

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (19) : 157-162.

BAO Xing-xian1， XIONG Cong-bo2， LI Cui-lin3， TIAN Yu-qin2

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Abstract

A modal identification scheme based on noise rejection for MIMO signals was proposed in this paper. In this scheme the measured MIMO impulse response functions were firstly used to construct a block-Hankel matrix, and the rank of the matrix was got based on model order indicator, then the Structured Low Rank Approximation (SLRA) method was implemented to achieve the filtered data. Finally the modal parameters were estimated by using PRCE method from the noise rejection MIMO signals. The effectiveness of the proposed scheme was verified by using numerical and experimental studies.

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MIMO / model order / low rank approximation / block-Hankel matrix / modal parameters identification

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BAO Xing-xian1， XIONG Cong-bo2， LI Cui-lin3， TIAN Yu-qin2. Modal parameters identification based on noise rejection for MIMO signals[J]. Journal of Vibration and Shock, 2015, 34(19): 157-162

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