1. Department of Mechatronics Engineering; International Islamic University Malaysia; Jalan Gombak 53100 Kuala Lumpur Malaysia
2. School of Electrical, Electronics and Computer Engineering; University of Western Australia; 35 Stirling Highway Crawley WA 6009 Australia
3. School of Electrical, Electronics and Computer Engineering; University of Western Australia, 35 Stirling Highway; Crawley WA 6009 Australia