1. School of Electrical Engineering and Automation, Anhui University, Hefei, China
2. CAS Key Laboratory of Mechinery and Instrumentation, University of Science and Technology of China, Hefei, China
3. School of Mechanical, Materials, Mechatronic, and Biomedical Engineering, University of Wollongong, Wollongong, NSW, Australia
4. CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Instrumentation, University of Science and Technology of China, Hefei, China
5. Department of Electronic, Electrical and Systems Engineering, University of Birmingham, Birmingham, U.K.
6. New Industry Creation Hatchery Center, Tohoku University, Sendai, Japan
7. Yonsei Frontier Lab, Yonsei University, Seoul, South Korea
8. School of Electrical, Computer & Telecommunications Engineering, University of Wollongong, Wollongong, NSW, Australia