[Wang, Shengnan;Zhang, Xiaoyong;Cheng, Yijun;Jiang, Fu;Peng, Jun] Cent S Univ, Sch Informat Sci & Engn, Changsha 410075, Hunan, Peoples R China.^[Wang, Shengnan;Zhang, Xiaoyong;Cheng, Yijun;Jiang, Fu;Yu, Wentao;Peng, Jun] Hunan Engn Lab Rail Vehicles Braking Technol, Changsha 410075, Hunan, Peoples R China.^[Yu, Wentao] Cent South Univ Forestry & Technol, Sch Comp & Informat Engn, Changsha 410004, Hunan, Peoples R China.