About the Authors

Longfei Su

Affiliation College of Mechatronics and Automation, National University of Defense Technology, Changsha, Hunan, People’s Republic of China

Lubin Wang

Affiliation College of Mechatronics and Automation, National University of Defense Technology, Changsha, Hunan, People’s Republic of China

Fanglin Chen

Affiliation College of Mechatronics and Automation, National University of Defense Technology, Changsha, Hunan, People’s Republic of China

Hui Shen

Affiliation College of Mechatronics and Automation, National University of Defense Technology, Changsha, Hunan, People’s Republic of China

Baojuan Li

Affiliation College of Mechatronics and Automation, National University of Defense Technology, Changsha, Hunan, People’s Republic of China

Dewen Hu

dwhu@nudt.edu.cn

Affiliation College of Mechatronics and Automation, National University of Defense Technology, Changsha, Hunan, People’s Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DWH LFS HS. Performed the experiments: LFS. Analyzed the data: LFS LBW. Contributed reagents/materials/analysis tools: LFS LBW. Wrote the paper: LFS FLC BJL HS.