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Machine Fault Diagnosis Based on Wavelet Feature Extraction and Probabilistic Neural Networks
Author(s): 
Pages: 20-24
Year: Issue:  6
Journal: Journal of Jiangsu Teachers University of Technology

Keyword:  fault diagnosiswavelet feature extractionprobabilistic neural networks;
Abstract: 论述了基于离散小波变换系数的特征提取和概率神经网络在机械故障诊断中的应用。该方法利用离散小波获取振动信号各有效频带的能量作为故障参数,用概率神经网络构建设备运行状态模型,根据历史数据确定故障值并设置故障参数。实验结果从应用程序对轴承故障诊断表明,相比传统方法,该方法能够有效地提取测试信号内在的重要信息内容,并增加机械整体故障诊断的准确性,在机械设备故障处理系统中有良好的应用前景。
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