1. Department of Mechanical Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106, Taiwan; Department of Mechanical Engineering, Tuy Hoa Industrial College, Ward 8, Tuy Hoa City, 56000 Phu Yen Province, Viet Nam e-mail:
2. Department of Mechanical Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 106, Taiwan e-mail:
3. e-mail:
4. e-mail: Instrument Technology Research Center, National Applied Research Laboratories, Hsinchu Science Park, 20, R&D Road VI, Hsinchu 300, Taiwan