199 1. 12: promoted to associate professor.
199 1. 12 turn 1993. 1 1: postdoctoral fellow of the automatic control postdoctoral mobile station of northeastern university, and concurrently director of the engineering department of the automation research center.
1993. 12 turn 1994.5: deputy director and associate professor of the automation research center of northeastern university.
1994.6: promoted to professor by northeastern university.
1994.6 turn 1995. 1: deputy director and professor of automation research center of northeastern university.
1995.2: awarded as doctoral supervisor by northeastern university.
1995.2: director, professor and doctoral supervisor, institute of electrical automation, northeastern university.
1997.5 turn 1998.5: KAIST visiting researcher, Korean academy of sciences.
1998.6 turn 1998. 10: cooperative scientific research of the university of Alaska, USA.
1998. 12 to 2000. 12 Senior Visiting Scholar, Hong Kong University of Science and Technology
From12, 2003 to July, 2004, he was a visiting research professor at the University of Illinois, USA.
2006. 10 to 2006. 1 1 Visiting Research Professor, Oxford University, UK.