1. School of Mechanical and Electrical Engineering, Guizhou Normal University, Guiyang, China
2. Department of Electromechanical Engineering, University of Macau, Macau, China
3. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
4. College of Electrical Engineering, Henan University of Technology, Zhengzhou, China
5. State Key Laboratory of Internet of Things for Smart City and the Department of Electromechanical Engineering, University of Macau, Macau, China