1. School of Electrical Engineering, Yanshan University, Qinhuangdao, China
2. Department of Advanced Manufacturing and Robotics, Beijing Innovation Center for Engineering Science and Advanced Technology, Peking University (BIC-ESAT), College of Engineering, State Key Laboratory for Turbulence and Complex Systems, Peking University, Beijing, China
3. Department of Technology, National Deep Sea Center, Qingdao, China