[1] Gheorghe Asachi Tech Univ Iasi, Dept Automat Control & Appl Informat, Str Prof D Mangeron 27, Iasi, Romania
[2] Univ Santo Tomas, Fac Elect Engn, Res Grp MEM, Cra 9 51-11, Bogota, Colombia
[3] Xian Univ Technol, Sch Automat & Informat Engn, Dept Elect Engn, Xian 710048, Shaanxi, Peoples R China
[4] Univ Tecnol Fed Parana, UTFPR, Av Alberto Carazzai 1640, BR-86300000 Cornelio Procopio, PR, Brazil