Research on fault diagnosis methods with grey relation analysis

Grey diagnosis method is introduced in this paper. Grey relation analysis is applied in model identification of the fault diagnosis. Take example for the fault diagnosis for shipboard chemical defense equipment. The grey diagnosis methods for shipboard chemical defense equipment are studied by applying grey system theory and database. The theory of fault diagnosis by grey relation degree is put forward. The resolving project is set up based on grey theory and database and the arithmetic and program design flow of grey relation degree are provided. It´s proved by experiments that the arithmetic has merits in both high accuracy and economical practicability.