Construction method for chaos synchronization control strategy

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (13) : 170-175.

ZUO Zhaolun, YU Xiang

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Abstract

Low-frequency line spectra in underwater radiated noise are the main factor affecting submarine acoustic stealth performance. The line spectra chaotic control technique is to convert low frequency line spectra into wide frequency chaotic spectra with a nonlinear vibration isolation system (VIS), realize spectra reconstruction and reduce line spectra intensity. Previous studies show that the generalized chaos synchronization method can be used to realize continuous chaos of a VIS under variable operation conditions, and in some cases, chaos amplitude can be significantly reduced to provide a new idea for the line spectra chaotic control theory. However, at present, in order to generate continuous chaos motion with small amplitude utilizing the generalized chaos synchronization method, the "trial and error" method is the only way to choose the appropriate chaos synchronization control strategy. Consequently, there is not a systematic method. Here, a construction method for the appropriate chaos synchronization control strategy was proposed. This method was verified and illustrated using a coupled Duffing VIS, and applied in a two-DOF nonlinear VIS.

Key words

line spectra suppressing / generalized chaos synchronization / control strategy / central manifold / vibration isolation system (VIS)

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ZUO Zhaolun, YU Xiang. Construction method for chaos synchronization control strategy[J]. Journal of Vibration and Shock, 2020, 39(13): 170-175

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