YAO Chengyu1 WANG Bin1 CHEN Dongning2, 3 ZHANG Ruixing2, 3
1. Key Laboratory of Industrial Computer Control Engineering of Hebei Province, Yanshan University, Qinhuangdao 066004;2. Hebei Province Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, Qinhuangdao 066004;3. Key Laboratory of Advanced Forging & Stamping Technology and Science(Yanshan University),Ministry of Education of China, Qinhuangdao 066004