Research on Fault Diagnosis of Marine Diesel Engine Based on Integrated Similarity

In order to guarantee the normal operation of marine, an effective fault diagnosis model need to be established to determine the reason causing the fault of marine diesel engine. According to the problem of fault diagnosis of marine diesel engine, comprehensively applied improved PCA similarity, KPCA similarity and distance similarity, a method solving fault diagnosis of marine diesel engine is proposed based on comprehensive similarity. Because comprehensive similarity includes the component of KPCA similarity which can extract nonlinear feature relatively well, the effect of fault diagnosis using comprehensive similarity is better than only using PCA similarity. The effect of fault diagnosis in MAN B&W 10L90MC marine diesel engine verified the effectiveness of this method. Therefore, the method using comprehensive similarity to diagnose the fault of marine diesel engine has important practical significance.