Research of the matching method of train engine car bearings based on AHP

Current situation of bearing matching in China is mainly by artificial selected, thus it inevitably exists some errors and can´t achieve the optimal matching. This paper proposes a algorithm of locomotive bearings that is based on the analytic hierarchy process view of the current status. There are several major technology mentioned bearing index gived separately weight. Then each technical indicators divides into five levels. Getting a score by the multiplication of each index weights and level score, each index is calculated in this method, finally all of the index score add together, the final score is as a reference for matching bearing.