1. School of Automation, the Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems, and the Engineering Research Center of Intelligent Technology for Geo-Exploration, Ministry of Education, China University of Geosciences, Wuhan, China
2. School of Electronic and Electrical Engineering, Kyungpook National University, Daegu, South Korea
3. School of Control and Computer Engineering, North China Electric Power University, Beijing, China