1. Faculty of Engineering and Science, Southern Cross University, Lismore, NSW 2480, Australia
2. Department of Research and Development, MYRA Corporate, Wollongbar Industrial Area, Alstonville, NSW 2477, Australia
3. Department of Electronics and Control Engineering, National Institute of Technology, Niihama College, Ehime 792-0022, Japan
4. Faculty of Engineering and Science, Southern Cross University, Gold Coast, QLD 4225, Australia