1. Key Lab of Industrial Computer Control Engineering of Hebei Province, Yanshan University, Qinhuangdao, People’s Republic of China
2. Department of Informatics, Kings College London, London, UK
3. Parallel Robot and Mechatronic System Laboratory of Hebei Province and Key Laboratory of Advanced Forging &Stamping Technology and Science of Ministry of National Education, Yanshan University, Qinhuangdao, People’s Republic of China