A New Design Method for the Fault Diagnosis on the Rotating Rectifier of Aeronautic Synchronous Generator

Abstract:

A new method of fault diagnosis on the rotating rectifier of aeronautic synchronous is raised in the work. Firstly, the condition, truth and approach of EMD are introduced, and the method and steps of building up the feature vector are also included, Secondly the theories of LS-SVM and the arithmetic in the classification are also included. Finally taking the faults of one and two diodes turning off for example, after extracting the feature vector of exciting current based on EMD and establishing the classifying method based on Gauss RBF LS-SVM, the test, analysis and comparison can be on between LS-SVM and NN the conclusion can be got that the classified method referred in the work owns higher exactness, takes less time and has more application on the on-line fault diagnosis NN.

• Periodical: Advanced Materials Research (Volume 548)
• Pages: 544-547
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.548.544
• Online since: July 2012
• Authors: Yong Zhi Liu, Cong Liu
• Keywords: Empirical Mode Decomposition (EMD), Feature Extraction, Identification of Modes, Least Squares Support Vector Machines (Ls-SVM), Rotating Rectifier

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