1. School of Automation Engineering and Center for System Reliability and Safety, University of Electronic Science and Technology of China, Chengdu, China
2. CRRC Qingdao Sifang Rolling Stock Research Institute Company, LTD, Qingdao, China
3. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China
4. Center for System Reliability and Safety, University of Electronic Science and Technology of China, Chengdu, China