A Fault Diagnosis Approach for Rotor Systems Based on Empirical Mode Decomposition Method and Support Vector Machines

A fault diagnosis approach for rotor systems based on EMD method and support vector machine is proposed.The EMD method is used to decompose the vibration signal of a rotor system into a number of intrinsic mode function components and then the autoregressive mode(AR)model of each IMF component is established.The main auto-regressive parameters and the variances of remnant are regarded as the feature vectors.Then,the support vector machines used as fault classifiers are established to identify the condition and fault pattern of the rotor system.Practical examples show that the proposed approach can be applied to the rotor system fault diagnosis effectively.