1. Department of Applied Mathematics and School of Automation, Harbin University of Science and Technology, Harbin, China
2. Department of Applied Mathematics, Harbin University of Science and Technology, Harbin, China
3. School of Automation, Harbin University of Science and Technology, Harbin, China
4. School of Mathematics-Physics and Finance, Anhui Polytechnic University, Wuhu, China
5. School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, China