1. School of Electrical Engineering and Automation, Fuzhou University, Fujian, China
2. Nanjing University of Science and Technology, Jiangsu, China
3. Biological Science and Medical Engineering and the Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beihang University, Beijing, China
4. University of Macau, Macao, China
5. College of Mechatronics and Automation, NUDT, Changsha, China
6. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China
7. Department of Automation, Shanghai Jiao Tong University, Shanghai, China