Study on bistable system in weak pulse signal processing

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (6) : 150-154.

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Study on bistable system in weak pulse signal processing

Shi Peng1, Leng Yong-gang1，2, Fan Sheng-bo1, Li Xiao-long1;lai zhi-hui1; gao yu-ji1

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Abstract

Bistable system is the foundation of stochastic resonance. In the field of fault diagnosis, the stochastic resonance of a bistable system can be used to detect a weak signal in strong background noise. In this paper, we first studied the bistable system response of a pulse signal, and proposed the method of setting initial condition to extract the pulse signal. By analyzing the fault signal of rolling bearings, we have proved the practicability of this method in impact fault diagnosis.

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Shi Peng;Leng Yong-gang;Fan Sheng-bo;Li Xiao-long;lai zhi-hui;gao yu-ji. Study on bistable system in weak pulse signal processing[J]. Journal of Vibration and Shock, 2012, 31(6): 150-154