1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei Key Laboratory of Robot Sensing and Human–Robot Interaction, School of Mechanical Engineering, Hebei University of Technology, Tianjin, China
2. Key Laboratory of Exercise Physiology and Sports Medicine, Tianjin University of Sport, Tianjin, China
3. School of Mechanical Engineering, Hebei University of Technology, Tianjin, China
4. Department of Mechanical Engineering, York University, Toronto, Canada
5. School of Engineering, Yanbian University, Yanji, China