Application of Box Counting Fractal Dimension to Fault Diagnosis in Cracked Rotor
MA Shan-hong · Machine Tool & Hydraulics · 2009
The vibration of large rotating machinery rotor system with a free-cracked shaft and cracked shafts was simulated on rotor experimental platform.According to the fractal characteristics of vibration signal about cracked rotor and free-cracked rotor shaft,fractal box counting dimensions of test data were calculated.The orbit of free-cracked shaft shows as an elliptic,the corresponding fractal box counting dimension is small;the orbit of cracked shaft becomes more complex and its corresponding fractal box counting dimension is larger than that of normal shaft.Therefore,the fractal box counting dimension can be used for fault diagnosis of cracked rotor.