About the Authors

Junpeng Hu

Contributed equally to this work with: Junpeng Hu, Zhen Zuo

hujunpeng332@hotmail.com

Affiliation School of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan Province, China

Zhen Zuo

Contributed equally to this work with: Junpeng Hu, Zhen Zuo

Affiliation School of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan Province, China

Zhiping Huang

‡ These authors also contributed equally to this work.

Affiliation School of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan Province, China

Zhi Dong

‡ These authors also contributed equally to this work.

Affiliation School of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha, Hunan Province, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JH ZH. Performed the experiments: JH ZZ. Analyzed the data: ZD ZH. Contributed reagents/materials/analysis tools: JH ZZ. Wrote the paper: JH. Prepared the equipment needed for experiment: ZD.