1. Department of Measurement and Control Engineering, School of Mechanical Engineering, Sichuan University, Chengdu, China
2. College of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya’an, China
3. College of Computer Science and Software Engineering, Shenzhen University, Shenzhen, China
4. School of Communication Engineering, Sichuan Post and Telecommunications College, Chengdu, China