关键词: CBR, 故障诊断, 循环发电机组, 相似度

Abstract:

In view of the fault diagnosis problem of cycle generating unit in a steel company,a fault diagnosis system based on CBR technology is designed.VSM (vector space model) similarity classifier is adopted to complete the design of the key technology of CBR.Fault cases are represented by vectors through calculating the weight of feature items;the similarity between the cases is calculated by cosine method;and the cases whose similarity is greater than the threshold value are output.Finally,the fault diagnosis system is developed based on WEB on ASP.NET platform.Case analysis results show that the proposed fault diagnosis system based on CBR can improve the accuracy and efficiency.

Key words: CBR;fault diagnosis;cycle generating unit;similarity