Multi-fractal analysis on fault diagnoses
Rongtao Hou · Modern Manufacturing Engineering · 2010
The experimental equipment is established and the fault vibration signals are collected which are the rub-impact fault,oil oscillating and rub and oil oscillating interaction coupling fault using multi-fractal theory,general fractal dimension of fault signals is calculated,and general dimension spectrum and singular spectrum are discussed deeply.Hence general dimension energy spectrum singular energy spectrum is defined,and two energy spectrums are used as characteristic quantity to actualize the feature extraction and recognition.Study shows that fault signals are identify effectively and enhance robustness with general dimension energy spectrum and singular energy spectrum used together.It provided an identification method for the complex rotating machinery fault diagnosis.