1. Department of Control Science and Engineering, Harbin Institute of Technology, Harbin, China
2. Department of Control Science and Engineering, Beijing University of Technology, Beijing, China
3. Department of Automation, Central South University, Changsha, China
4. Department of Mechanical and Industrial Engineering, Faculty of Engineering, Norwegian University of Science and Technology, Trondheim, Norway
5. Department of Electrical and Electronics Engineering, Bogazici University, Istanbul, Turkey