1. School of Electrical and Information Engineering, North Minzu University, Yinchuan, China
2. LAMIH laboratory, UMR CNRS 8201, Université Polytechnique Hauts-de-France, Valenciennes, France
3. School of Mechanical Engineering, Southeast University, Nanjing, China
4. Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University, Hong Kong, China