Fault diagnosis of rotating machine based on rough set theory(I) Fundamental concepts of rough sets
Xu Qi · Journal of Nanjing University · 2002
Based on the principle of rough set theory, calculation of upper and lower approximation and categorization and reduction were performed on inaccurate, insufficient and indefinite data. Data reduction was carried out and implied relation and mode between data were figured out. Thus relative rule were set up and its credibility was established. Fundamental concepts as a theoretical framework, equivalence of knowledge and reduction are discussed. The method that express knowledge base about fault diagnosis of rotating machine is provided.