1. School of Computer Science, China University of Geosciences, Wuhan, China
2. School of Economics and Management, Hubei University of Automotive Technology, Shiyan, China
3. State key laboratory of offshore wind power equipment and efficient utilization of wind energy, Harbin Electric Corporation Wind Power, Xiangtan, China
4. School of Mechanical Engineering, Hunan University of Science and Technology, Xiangtan, China