1. Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, W 438, Hebei Ave., Qinhuangdao City, Hebei 066004, China; and State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, 38 Zheda Rd., Hangzhou 310027, China (Corresponding author), e-mail: guorui@ysu.edu.cn, https://orcid.org/0000-0003-0506-6677
2. Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, W 438, Hebei Ave., Qinhuangdao City, Hebei 066004, China, https://orcid.org/0000-0001-6351-8008
3. Hebei Key Laboratory of Special Delivery Equipment, Yanshan University, W 438, Hebei Ave., Qinhuangdao City, Hebei 066004, China, https://orcid.org/0000-0003-4959-7234 (Z.J.), https://orcid.org/0000-0003-4715-4843 (Y.Z.), https://orcid.org/0000-0001-7133-7485 (G.D.)
4. Xingtai Polytechnic College, N 552 Gangtie Rd., Xingtai, Hebei 054000, China, https://orcid.org/0000-0002-0841-3788