针对齿轮的故障诊断,提出了一种基于小波特征提取和BP神经网络的诊断系统,利 用小波分解后各频段能量的分布作为特征向量输入神经网络。试验表明该方法能准确地诊断出齿 轮的故障,具有广泛的应用前景 - Aimed at the gear fault diagnosis, a diagnosis systemwhich based on thewavelet for picking up character and BP neural network are proposed, the