1. College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, China
2. Shandong Province Key Laboratory of Mine Mechanical Engineering, Shandong University of Science and Technology, Qingdao, China
3. School of Information Science and Engineering, Shandong Normal University, Jinan, China
4. China Coal Technology &Engineering Group Shanghai Co., Ltd, Shanghai, China