Exact Evaluation of Damping and Frequency Based on Partical Swarm Optimization Algorithm

Hu Feng;Wu Bo;Hu You-min;Shi Tie-lin

Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (7) : 8-11,2.

PDF(285 KB)
PDF(285 KB)
Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (7) : 8-11,2.
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Exact Evaluation of Damping and Frequency Based on Partical Swarm Optimization Algorithm

  • Hu Feng,Wu Bo,Hu You-min,Shi Tie-lin
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Abstract

This paper proposes a novel approach for structure modal parameter identification. The approach changes the identification problem to an optimal one. The global optimal solutions for the required parameters, including frequency, damping ratio, amplitude and phase of the structure can be obtained by taking the advantage of the Partical Swarm Optimization. The results of numerical simulation studies showed that the accuracy of this method is comparatively higher, and the adjacent modal coupling has no effect on its accuracy. The FIR lowpass has effect on the phase’s identification.

Key words

Partical Swarm Optimization / damping recognition / frequency recognition / lowpass

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Hu Feng;Wu Bo;Hu You-min;Shi Tie-lin. Exact Evaluation of Damping and Frequency Based on Partical Swarm Optimization Algorithm[J]. Journal of Vibration and Shock, 2009, 28(7): 8-11,2
PDF(285 KB)

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