1. School of Computer Science, Hunan University of Technology, Zhuzhou, 412000 Hunan, China
2. CRRC Zhuzhou Electric Locomotive Co., LTD., Zhuzhou, 412000 Hunan, China
3. National Innovation Center of Advanced Rail Transit Equipment, Zhuzhou, 412000 Hunan, China
4. Hunan Key Laboratory of Mechanical Equipment Health Maintenance, Hunan University of Science and Technology, Xiangtan, 411201 Hunan, China