Fault diagnosis method based on improved dimensionless parameters information fusion
Qi Hu · Computer-aided engineering · 2015
As to the conflict evidence resulting from the uncertainty of dimensionless parameters information,a fault diagnosis method of dimensionless parameters information fusion is proposed on the basis of improved evidence theory.The artificial immune algorithm is used to create the original evidences,and the similar evidences and conflict evidences are found out by calculating the similarity among the evidences of the dimensionless immune detectors.The similar evidences are kept,the conflict evidences are modified by credibility,and the effect of conflict evidences on the composed results of evidence theory can be decreased.The fault diagnosis test on a modular rotating machine verifies that the method is valid.The method can significantly improve the diagnostic accurate rate.