1. School of Information and Control Engineering and the Key Laboratory of Artificial Intelligence and Big Data, China University of Mining and Technology, Xuzhou, China
2. School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, China
3. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
4. College of Information Science and Engineering, Northeastern University, Shenyang, China