1. School of Automobile and Transportation, Vehicle Measurement Control and Safety Key Laboratory of Sichuan Province, Xihua University, Chengdu, China
2. School of Architecture and Civil Engineering, Sichuan Engineering Research Center for Mechanical Properties and Engineering Technology of Unsaturated Soils, Chengdu University, Chengdu, China
3. WM Motor Technology Group Company Limited, Chengdu, China
4. Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
5. School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, China