1. Vitalent Consulting, Gothenburg, Sweden
2. School of Automation Science and Electrical Engineering, Beihang University, Beijing, P.R. China
3. Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
4. ICC Lab College of Science and Engineering, James Cook University, Smithfield, QLD, Australia
5. SIGMA Lab School of Electrical and Information Engineering, University of Sydney, Sydney, NSW, Australia