College of Electrical and Information Engineering, Hunan University Changsha, Hunan 410082
College of Electrical and Information Engineering, Hunan University Changsha, Hunan 410082
College of Electrical and Information Engineering, Hunan University Changsha, Hunan 410082
College of Electrical and Information Engineering, Hunan University Changsha, Hunan 410082/National Key Lab of Vehicle Transmission, Beijing, 100072
Copyright © Lei Xiao, Shoudao Huang, Keyuan Huang, Jiangtao Gai et al. This is
an open access article distributed under the Creative Commons Attribution
License, which permits unrestricted use, distribution, and reproduction in any
medium, provided the original work is properly cited.