1. University “Politehnica” of Bucharest,Department of Automation and Industrial Informatics,Bucharest,Romania
2. Valahia University of Targoviste,Faculty of Electrical Engineering, Electronics and Information Technology,Targoviste,Romania
3. University “Politehnica ” of Bucharest,Faculty of Automatic Control and Computers,Bucharest,Romania
4. University “Dunarea de Jos ” of Galati,Department of Automation and Electrical Engineering,Galati,Romania
5. Institute of Multidisciplinary Research for Science and Technology Valahia University of Targoviste,Targoviste,Romania