1. Shenyang Institute of Automation, State Key Laboratory of Robotics, Chinese Academy of Sciences, Shenyang, China
2. SIASUN Robot and Automation Company Ltd, Shenyang, China
3. School of Electrical and Electronics Engineering, Nanyang Technological University, Singapore, Singapore
4. Rehabilitation Center for the Disabled, Shenyang, China
5. Department of Industrial and Manufacturing Systems Engineering, Emerging Technologies Institute, The University of Hong Kong, Hong Kong, China