1. School of Mechanical Electrical Engineering and Automation, Harbin Institute of Technology Shenzhen, Shenzhen, China
2. Department of Automation, University of Science and Technology of China, Hefei, China
3. Department of Mechanical and Energy Engineering, the Shenzhen Key Laboratory of Biomimetic Robotics and Intelligent Systems, and the Guangdong Provincial Key Laboratory of Human-Augmentation and Rehabilitation Robotics in Universities, Southern University of Science and Technology, Shenzhen, China
4. School of Electrical and Electronic Engineering, Nanyang Technological University, Jurong West, Singapore