1. Automation College, Nanjing University of Aeronautics and Astronautics, Nanjing, China
2. Department of Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
3. Nanjing University of Aeronautics and Astronautics, Nanjing, China
4. Nanjing Vocational University of Industry Technology, Nanjing, China
5. Jinling Institute of Technology, Nanjing, China