1. Institute of Rail Transit, Tongji University, Shanghai, China
2. National Maglev Transportation Engineering R&D Center, Tongji University, Shanghai, China
3. College of Electrical Engineering, Sichuan University, Chengdu, Sichuan, China
4. School of Intelligent Manufacturing and Electronic Engineering, Wenzhou University of Technology, Wenzhou, China
5. State Key Laboratory of Maritime Technology and Safety, Wuhan University of Technology, Wuhan, China
6. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China