1. School of Electrical Engineering, Yanshan University, Qinhuangdao, China
2. Department of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao, China
3. College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou, Zhejiang, China
4. School of Control Science and Engineering, Northeastern University, Qinhuangdao, China