1. Materials Engineering Department, Engineering School of São Carlos-University of Sao Paulo, São Paulo, Brazil
2. Electrical Engineering Department, Juiz de Fora Federal University, Juiz de fora, Brazil
3. Electrical Engineering Department, São João del-Rei Federal University, São João del-Rei, Brazil
4. Mecanical Engineering Department, São João del-Rei Federal University, São João del-Rei, Brazil
5. Department of Physical Education and Health Sciences, São João del-Rei Federal University, São João del-Rei, Brazil