1. School of Electrical and Control engineering, Safety Engineering College, Heilongjiang University of Science and Technology,Harbin,China
2. School of Mechanical Engineering, Heilongjiang University of Science and Technology,Harbin,China
3. Heilongjiang University of Science and Technology,Academic Theory Research Department,Harbin,China
4. School of Mining engineering, Heilongjiang University of Science and Technology,Harbin,China