[Song, Yazhen;Peng, Jun;Liu, Weirong;Zhang, Xiaoyong;Gu, Xin] Cent S Univ, Sch Informat Sci & Engn, Changsha, Hunan, Peoples R China.^[Yu, Wentao] Cent South Univ Forestry & Technol, Coll Comp & Informat Engn, Changsha, Hunan, Peoples R China.^[Song, Yazhen;Peng, Jun;Liu, Weirong;Zhang, Xiaoyong;Gu, Xin;Yu, Wentao] Hunan Engn Lab Rail Vehicles Braking Technol, Changsha, Hunan, Peoples R China.