By introducing Rough Set Theory and the principle of Support vector machine,a gear fault diagnosis method based on them is proposed.Firstly,diagnostic decision-making is reduced based on rough set theory,and the noise and redundancy in the sample are removed,then,according to the chosen reduction,a support vector machine multi-classifier is designed for gear fault diagnosis.Therefore,SVM'training data can be reduced and running speed can quicken.Test shows its accuracy and effi- ciency of gear fault diagnosis.

Gear Fault Diagnosis Based on Rough Set and Support Vector MachineTIAN Huifang SUN Shanxia School of Mechanical and Electrical Engineering,Wuhan University of Technology,Wuhan 430070,China,By introducing Rough Set Theory and the principle of Support vector machine,a gear fault diagnosis method based on them is proposed.Firstly,diagnostic decision-making is reduced based on rough set theory,and the noise and redundancy in the sample are removed,then,according to the chosen reduction,a support vector machine multi-classifier is designed for gear fault diagnosis.Therefore,SVM'training data can be reduced and running speed can quicken.Test shows its accuracy and effi- ciency of gear fault diagnosis.rough set;;support vector machine;;fault diagnosis;;multi-classifier