基于小波尺度谱和遗传算法的转子故障诊断

针对发动机的转子故障,提出了一种基于尺度谱图像纹理特征和遗传算法的故障诊断技术.根据不同转速下的3类转子故障数据样本,运用连续小波尺度谱图像纹理特征提取其图像纹理特征.采用遗传算法对这些特征进行选择优化,去除与分类不相关的冗余特征.最后,构建结构自适应集成神经网络对优化后的特征进行智能诊断.试验表明,该方法能准确地诊断出转子的故障,具有广泛的应用前景.

Rotor fault diagnosis base on wavelet scalogram and genetic algorithm

Aimed at the engine rotor fault,a new diagnosis method based on the texture features of the scalogram image and genetic algorithm is proposed. According to 3 classes rotor faults samples,continous wavelet scalogram image texture features are obtained. Then,the genetic algorithm was received to select and optimize these features. At last,the structure self-adaptive compositive NN is constructed and used for diagnosis intelligent. The testing result indicates that this method can accurately diagnose the fault...