1. Department of Electrical Engineering, Federal University of Campina Grande, Campina Grande, Paraíba, Brazil
2. Institute for Systems and Computer Engineering, Technology and Science (INESCT TEC), Porto, Portugal
3. Department of Electrical Engineering, Federal University of Paraíba, Paraíba, João Pessoa, Brazil
4. Department of Electrical Engineering, Federal Institute of Ceará, Cedro, Ceará, Brazil