Two-step response reconstruction method based on limited measured information

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (11) : 291-297.

SHI Pengcheng1, PENG Zhenrui1, DONG Kangli2

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Abstract

A two-step structural response reconstruction method is proposed, which can reconstruct the lost response due to sensor damage and the rest of the required response by using the response of normal measurement. Firstly, the relationship between the measured response of the sensors which are working normally and the responses needed reconstructed is established, and all kinds of responses with noise are calculated. Then, the particle filter algorithm is used to reduce the influence of colored noise on the reconstruction accuracy in the measurement process, and the firefly algorithm is introduced to replace the resampling process in the particle filter algorithm to improve the particle impoverishment. Finally, a two-dimensional truss is simulated, and the results show that the proposed method has higher accuracy than the direct response reconstruction method.

Key words

limited measurement information / particle filter / firefly algorithm / response reconstruction;colored noise

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SHI Pengcheng1, PENG Zhenrui1, DONG Kangli2. Two-step response reconstruction method based on limited measured information[J]. Journal of Vibration and Shock, 2022, 41(11): 291-297

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