1. Department of Electrical Engineering, School of Electrical and Electronic Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
2. Department of Industrial Automation, School of Electrical and Electronic Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
3. Electrical and Computer Engineering Department, Clarkson University, Potsdam, NY, USA
4. Department of Electrical Engineering and Electronics, Shibaura Institute of Technology, Tokyo, Japan