Vibration Fault Diagnosis Method of Centrifugal Pump Based on EMD Complexity Feature and Least Square Support Vector Machine

• DOI: 10.1016/j.egypro.2012.02.191
• Publication Date: 2012-04-25T00:28:11Z
• Authors: Zhou Yunlong; Zhao Peng
• Keywords: Feature vector; Mode (computer interface); Feature (linguistics)

Aiming at the non-stationary and non-linearity characteristics of vibration signals centrifugal pump, a new method based on complexity feature Empirical Mode Decomposition (EMD) Least Square Support Vector Machine (LS-SVM) is put forward. First all, was used to decompose into finite number stationary Intrinsic Functions (IMF), then features each IMF extracted as fault vectors served input parameters LS-SVM classifier diagnosis fault. Application results showed that proposed very effective, which can better extract nonlinear more exactly