1. National Demonstration Center for Experimental Mechanical and Electrical Engineering Education, Tianjin University of Technology, Tianjin 300384, China
2. Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, China
3. School of Electrical Engineering and Automation, Tianjin University of Technology, Tianjin 300384, China
4. Tianjin Key Laboratory for Control Theory & Applications in Complicated Industry Systems, Tianjin 300000, China