1. Department of Electrical and Electronic Engineering, Faculty of Engineering; Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia
2. Department of Computer and Communication Engineering, Faculty of Engineering; Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia
3. Department of Mechanical and Manufacturing Engineering, Faculty of Engineering; Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia