1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, China
2. School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu, China
3. School of Information Science & Technology, Southwest Jiaotong University, Chengdu, China
4. Research Center for Super-High-Speed Evacuated Tube Maglev Transport, Southwest Jiaotong University, Chengdu, China