Papon Ngamprasert Department of Electrical and Electronic Engineering, Kosen Institute, King Mongkut's Institute of Technology Ladkrabang Thailand
Natchapol Ruangsap Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology Phra Nakhon Thailand
Nattachote Rugthaicharoencheep Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology Phra Nakhon Thailand
