[1] Hebei Univ Technol, State Key Lab Reliabil & Intelligence Elect Equip, Tianjin 300130, Peoples R China
[2] Hebei Univ Technol, Sch Comp Sci & Engn, Tianjin 300130, Peoples R China
[3] Natl Chin Yi Univ Technol, Dept Elect Engn, Taichung 41170, Taiwan