The Research of Weak Fault Signal Detection Based on the Duffing Oscillator Coupled Synchronization

This paper is concerned with the weak signal detection based on the Duffing chaotic model. To solve the problem of low SNR in traditional testing methods, a method of detecting weak signals based on the Duffing oscillator coupled synchronization is proposed. Through the chaos theory and simulations, the characteristics of the coupled Duffing oscillator, the SNR threshold of the weak signal detection methods based on the coupled Duffing oscillator and the advantages of the coupled synchronization method are analyzed. At last, the effectiveness of the proposed method is shown by a simulation example.