A New Feature Extraction Method Based on EEMD and Multi-Scale Fuzzy Entropy for Motor Bearing

Huimin Zhao 1,2,3,4,5, Meng Sun 1, Wu Deng 1,2,3,4,5,* and Xinhua Yang 1 1 Software Institute, Dalian Jiaotong University, Dalian 116028, China; [email protected] (H.Z.); [email protected] (M.S.); [email protected] (X.Y.) 2 Sichuan Provincial Key Lab of Process Equipment and Control, Sichuan University of Science and Engineering, Zigong 64300, China 3 Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, China 4 The State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China 5 Dalian Key Laboratory of Welded Structures and Its Intelligent Manufacturing Technology (IMT) of Rail Transportation Equipment, Dalian Jiaotong University, Dalian 116028, China * Correspondence: [email protected]; Tel.: +86-411-8410-5386