1. State Key Laboratory of Intelligent Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
2. Department of Automation, School of Information Science and Technology, Tsinghua University, Beijing, China
3. Guangdong Intelligent Research Institute, Dongguan, China
4. Department of Rehabilitation Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China