1. School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, China
2. College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, China
3. School of Electrical Engineering, Zhejiang University, Hangzhou, China
4. School of Transportation, Southeast University, Nanjing, China
5. Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China