基于MATLAB的主元分析,可用于信号特征提取及模式识别-the main element analysis, signal can be used for feature extraction and pattern recognition

小波包能量谱的计算，对信号进行频段分析，特征提取，用于模式识别-wavelet packet energy spectrum

BP神经网络用与实现不同故障的分类，对复杂信号模式识别是一种很有效的方法。-BP neural network with the classification of different faults and implementation of complex signal pattern recognition is a very effective method.