Research on aeroengine rub-impact fault analysis based on wavelet transform and the local binary patterns

The local binary patterns statistical characteristics of the continuous wavelet transform scalogram of the aeroengine vibration signal are explored in this paper. The method is based on recognizing that certain uniform local binary patterns which are fundamental properties of local image texture and their occurrence histogram is proven to be a very powerful texture feature. Three patterns are studied on the rub-impact faulty signals from the aeroengine test. The analysis indicates that these features are suitable to reflect the local information of the scalogram and can reveal the characteristic of vibration signals well.