STUDY ON DESIGN METHOD OF RESONANT DEMODULATION APPARATUS FOR ROLLING ELEMENTS BEARING FAULT DIAGNOSIS

Owing to that the parameters of the current resonant demodulation apparatus commonly used in fault diagnosis for rolling bearings are usually fixed, its application is somewhat limited. In the paper, the characteristics of the rolling bearing vibration signals are analyzed. By using the relationship between the faults and the kurtosis of the rolling bearing vibration signals, a new method to design the resonant demodulation apparatus is proposed based on genetic algorithm which is very popular in stochastic optimal problems. The feasibility and effectiveness of the method proposed are demonstrated by experiments.