DocumentCode :
1868141
Title :
Fault diagnosis of push-pull circuits using least squares wavelet support vector machines
Author :
Luo, Zhiyong ; Shi, Zhongke
Author_Institution :
Coll. of Autom., Northwestern Polytech. Univ., Xi´´an
fYear :
2006
fDate :
19-21 Jan. 2006
Lastpage :
1030
Abstract :
An approach for fault diagnosis of push-pull circuits based on least squares wavelet support vector machines (LS-WSVM) is presented. Output voltage signals of push-pull circuits under faulty conditions are obtained with simulation. Then wavelet coefficients of output voltage signals are gained by wavelet decomposition, and faulty feature vectors are extracted from coefficients. After training multi-class LS-WSVM by faulty feature vectors, the LS-WSVM classifiers of the circuit fault diagnosis system are built. The simulation result shows the fault diagnosis method of the push-pull circuits with multi-class LS-WSVM is effective
Keywords :
fault diagnosis; feature extraction; learning (artificial intelligence); least squares approximations; pattern classification; signal processing; support vector machines; wavelet transforms; circuit fault diagnosis; faulty feature vectors; least squares wavelet support vector machines; multiclass LS-WSVM; output voltage signals; push-pull circuits; wavelet decomposition; Circuit faults; Circuit simulation; Fault diagnosis; Kernel; Least squares methods; Pulse circuits; Pulse width modulation; Support vector machine classification; Support vector machines; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Systems and Control in Aerospace and Astronautics, 2006. ISSCAA 2006. 1st International Symposium on
Conference_Location :
Harbin
Print_ISBN :
0-7803-9395-3
Type :
conf
DOI :
10.1109/ISSCAA.2006.1627498
Filename :
1627498
Link To Document :
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