1. Yonsei Institute of Convergence Technology; Yonsei University; Yeonsu-gu Incheon 21983 Republic of Korea
2. School of Integrated Technology and Yonsei Institute of Convergence Technology; Yonsei University; Yeonsu-gu Incheon 21983 Republic of Korea
3. Development Group for Creative Research Engineers of Convergence Mechanical System; Korea University; Seongbuk-gu Seoul 02841 Republic of Korea