Analysis and application of non-linear vibration signal of inclined cables based on particle filter

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (5) : 108-112.

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Analysis and application of non-linear vibration signal of inclined cables based on particle filter

YE Qing-wei，YUAN De-bin，WANG Xiao-dong，ZHOU Yu

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Abstract

To the non-linear vibration signal of inclined cables,the paper use PF theory to process and applicate. primarily, nonlinear dynamic model of the cable-stayed beam coupling system is dispersed in temporal dimension by using the finite difference method, so as to get discrete nonlinear vibration equation of any cable element. The next place, based on least square-fit, fit discrete nonlinear system to get state equations needed by PF theory. Finally, PF theory is used to process collected non-linear vibration signal on the state equations, to get excellent nonlinear denoising signal and its stable tracking and predictive function. By abundant simulation experiment and trial of the practice inclined cables’s nonlinear vibration signal, it turn out that if the frequency of sampling is big enough, PF theory can effectively remove noise from the nonlinear vibration signal, and provide reliable and stable signal tracking and predictive method.

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non-linear vibration of inclined cables / finite difference method / particle filter theory / noise removal / signal tracking

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YE Qing-wei;YUAN De-bin;WANG Xiao-dong;ZHOU Yu. Analysis and application of non-linear vibration signal of inclined cables based on particle filter[J]. Journal of Vibration and Shock, 2013, 32(5): 108-112