1. School of Mechanical and Electrical Engineering, Changchun University of Technology, Changchun, China
2. Department of Automation, Tsinghua University, Beijing, China
3. School of Mechanical and Electrical Engineering, Changchun Institute of Technology, Changchun, China
4. School of Computer Science and Engineering, Changchun University of Technology, Changchun, China
5. College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, China