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