1. School of Electrical Engineering, Rajamangala University of Technology Rattanakosin, Salaya, Nakhon Pathom, Thailand
2. Department of Mechatronics Engineering, Rajamangala University of Technology Suvarnabhumi, Nonthaburi, Thailand
3. Department of Electrical Engineering, Rajamangala University of Technology Tawan-Ok, Chantaburi Campus, Chantaburi, Thailand
4. School of Electrical Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand