1. State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, China
2. Zhejiang Key Laboratory of Intelligent Operation and Maintenance Robot, Hangzhou, China
3. First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
4. College of Electrical Engineering, Zhejiang University, Hangzhou, China
5. Department of Automation Technology, ABB Corporate Research, Västerås, Sweden
6. Dongfang Electric Academy of Science and Technology Company Ltd., Chengdu, China
7. School of Electrical and Computer Engineering, The University of Sydney, Sydney, NSW, Australia