1. Key Laboratory of Biomimetic Robots and Systems, Ministry of Education, the State Key Laboratory of Intelligent Control and Decision of Complex System, the Beijing Advanced Innovation Center for Intelligent Robots and Systems, and the School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, China
2. Key Laboratory of Biomimetic Robots and Systems, Ministry of Education, the State Key Laboratory of Intelligent Control and Decision of Complex System, and the School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, China
3. Department of Materials Engineering Science, Osaka University, Osaka, Japan