1. Anhui Engineering Laboratory of Human–Robot Integration System and Intelligent Equipment, School of Electrical Engineering and Automation, Anhui University, Hefei, People's Republic of China
2. Information Materials and Intelligent Sensing Laboratory of Anhui Province, Hefei, People's Republic of China
3. School of Artificial Intelligence, Anhui University, Hefei, People's Republic of China
4. Department of Automation, Shanghai Jiao Tong University, Shanghai, People's Republic of China
5. School of Electronic Information and Electrical Engineering, Chengdu University, Chengdu, People's Republic of China