基于小波理论的主元分析在故障诊断中的研究与应用

Research and Application of PCA in Process Fault Diagnosis Based on Wavelet Theory

主要分析主元分析的原理和主要算法及其在故障诊断方面的应用 ,简单介绍数据预处理的小波分析方法 ,并把这两种方法结合用于过程故障诊断。常减压装置的应用实例表明 。

By analyzing of PCA and Wavelet, fault diagnosis results are not only including the real faults but also including the disturbances caused by the noise. In order to eliminate the influence of noise, wavelet transform is used for preprocessing industrial data before using the PCA method to fault diagnosis. The results to apply these two integrated methods for distillation unit in practical process industry are satisfied.