Abstract:

The wire and cable,as a basic industry of wide applications,occupies 1/4 the output value of China's electrical industry,second only to the automotive industry,and is considered as the “artery” and “nerve” of national economy.In recent years the determination of the point of failure for the wire and cable has been attracting in-depth study by domestic and foreign scholars.By means of experimental simulation and with the help of the wavelet analysis,threshold denoising method is discussed,and its application in the cable fault diagnosis is studied.Experimental results show that the method is feasible in cable fault characteristic signal extraction.

Key words: wavelet analysis;fault diagnosis;3σ