Fault Diagnosis of Gearbox Based on Fractal Theory
Xue Bai-wen · Journal of Gun Launch & Control · 2007
Because the running gearboxes could produce nonlinear signals, normal linear methods were not effective for fault diagnosis.Fault diagnosis technology based on fractal theory was introduced. The basic principle of fractal method applied in fault diagnosis was described, the G-P algorithm was used to calculate fractal dimension in each state, and the calculation results were compared so as to realize fault diagnosis of gearboxes in the engine.The diagnosis result showed that the fractal dimension under the condition of normal state is 2.634 6,and each faulty state has a certain fractal dimension, and it is larger than 2.634 6. It is illustrated that this method is effective for describing the fault structure features in fault diagnosis of engine gearbox.