1. School of Engineering, University of the West of England, Bristol, UK
2. School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of China
3. School of Automation & Electronic Engineering, Qingdao University of Science & Technology, Qingdao, People’s Republic of China
4. College of Information Engineering, Zhejiang University of Technology, Hangzhou, People’s Republic of China
5. Faculty of Mechanical & Electrical Engineering, Kunming University of Science & Technology, Kunming, People’s Republic of China
6. School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, People’s Republic of China