[1] Guangxi Normal Univ, Sch Math & Stat, Guilin 541006, Peoples R China
[2] Yeungnam Univ, Dept Elect Engn, 280 Daehak Ro, Kyongsan 38541, South Korea
[3] East China Univ Sci & Technol, Minist Educ, Key Lab Smart Mfg Energy Chem Proc, Shanghai 200237, Peoples R China
[4] Qufu Normal Univ, Sch Engn, Rizhao 276826, Peoples R China