1. Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Av. Padre Tomás Pereira, Taipa, Macau
2. Institute for the Development and Quality, Macau
3. Department of Mechanical Engineering, Chung Hua University, Hsinchu, Taiwan, R.O.C.
4. Department of Mechanical Engineering, Hsiuping University of Science and Technology, Taichung, Taiwan, R.O.C.