Affiliation: | (1) Department of Control and Measurement Engineering, Korea Polytechnic University, Kyungi-do, Korea;(2) Department of Mechanical Engineering, Korea University, Anam-dong, Sungbuk-ku, 136-701 Seoul, Korea;(3) Department of Mechanical Engineering, Korea University, Anam-dong, Sungbuk-ku, 136-701 Seoul, Korea |