1. School of Economics and Management, Beihang University, Beijing, China
2. School of Automation Science and Electrical Engineering, Beihang University, Beijing, China
3. School of Electronics and Information Engineering, Beihang University, Beijing, China
4. Key Laboratory of Metallurgical Equipment and Control Technology, Ministry of Education, and the Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan, China