关键词: 故障诊断 最小二乘支持向量机 核函数 小波包分析

Abstract: In order to enhance fault diagnosis precision, the wavelet packet analysis and least squares support vector machine （LSSVM） are combined effectively. First the power spectrum of fault signals is decomposed by wavelet analysis, which predigests choosing me

Key words: Fault diagnosis, Least squares support vector machine,Kernel function, Wavelet packet analysis