1. Unit of Industrial Automation, Industrial Systems Institute, Patras, Greece
2. Department of Management and Innovation Systems, University of Salerno, Salerno, Italy
3. Department of Electrical & Electronic Engineering Science, University of Johannesburg, Johannesburg, South Africa
4. Department of Electrical Engineering, University of Setif I, Setif, Algeria
5. Department of Electrical, Computers and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
6. LS2N UMR 6004, Ecole Centrale de Nantes Nantes, France