Multi-Fractal Based Fault Diagnosis Method of Rotating Machinery
Aiming at complex features of the fault rotating machinery such as nonstationary and nonlinearity, a new method for fault diagnosis based on multi-fractal was introduced. The vibration signals firstly are analyzed by multi-fractal theory and have multi-fractal characteristics. Then the area of multi-fractal spectrum S and the entropy of multi-fractal spectrum Hm were extracted as new criterions to diagnose machinery faults. Results of experimental analysis indicate that the method is effective and it provides a new way in fault diagnosis of rotating machinery.
S. Q. Zhang et al., "Multi-Fractal Based Fault Diagnosis Method of Rotating Machinery", Applied Mechanics and Materials, Vols. 130-134, pp. 571-574, 2012