Improving FMEA Based on Cloud Model and Hierarchical Agglomerative Clustering

Abstract:

An improved FMEA method based on cloud model and agglomerated hierarchical clustering algorithm is proposed as to improve the RPN algorithm of failure mode and effect analysis （FMEA）. Firstly， the expert evaluation information is described and aggregated by the cloud model. Then， the cloud model is improved by the agglomerated hierarchical clustering algorithm， the correlation relationship among the failure modes is determined according to the clustering sub-clusters of the cloud model， and the risk level of the failure modes is determined according to the clustering results. Finally， the application and validity of the improved FMEA method are verified， by taking the online teaching failure risk assessment as an example.

Key words:failure mode and effect analysis (FMEA);cloud model;hierarchical agglomerative clustering;E-Learning risk