1. China Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Shanxi, Taiyuan, China
2. College of Electronic Information and Optical Engineering and the China Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Shanxi, Taiyuan, China
3. College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Shanxi, Taiyuan, China