[Gu, Xin;Peng, Jun;Cheng, Yijun;Jiang, Fu;Zhang, Xiaoyong;Huang, Zhiwu] 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.^[Gu, Xin;Peng, Jun;Yu, Wentao;Cheng, Yijun;Jiang, Fu;Zhang, Xiaoyong;Huang, Zhiwu] Hunan Engn Lab Rail Vehicles Braking Technol, Changsha, Hunan, Peoples R China.^[Cai, Lin] Univ Victoria, Dept Elect & Comp Engn, Victoria, BC, Canada.