1. School of Mechatronics and Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China
2. Key Laboratory of Conveyance and Equipment of Ministry of Education, East China Jiaotong University, Nanchang 330013, China
3. Institute of Precision Machining and Intelligent Equipment Manufacturing, East China Jiaotong University, Nanchang 330013, China
4. School Electrical Engineering, Guangxi University, Nanning 530004, China
5. Department of Mechanical, Energy, and Management Engineering, University of Calabria, I-87036 Rende, Italy
6. Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong, China
7. Faculty of Electrical Engineering and Information Technology, Otto-Von-Guericke University Magdeburg, 39106 Magdeburg, Germany