Professor, School of Mechanical Engineering, Sungkyunkwan University1995-present 

Council of Korean Society for Aeronautical and Space sciences, 2015-present 

Director of business, Intelligent Building Society of Korea, 2001-2007 

Director of planning, Institute of Control, Robotics and Systems, 2005-2006 

Director of Micro&Nano System Research Institute, 2001-2002 

Member of National Nano Fab Promoting Committee, 2001-2002 

Member of National RT Business Initiative, 2001-2002 

Director of Intelligent Micro System Research Institute, 2000-2001 

IT Planning Team, Samsung Electronics Co.,(SDS) 1993-1995 

ASME(American Society of Mechanical Engineers) 

IEEE(Institute of Electrical and Electronics Engineers, Inc.) 

KSME(Korean Society of Mechanical Engineering) 

KSPE(Korean Society for Precision Engineering) 

ICROS(Institute of Control, Robotics and Systems) 

KOSOMBE(KOrean Society Medical and Biological Engineering) 

KSAE(Korean Society of Automotive Engineers) 

KSAS(Korean Society for Aeronautical and Space sciences) 

KSS(Korean Society for Simulation) 

Marquis Who's Who in the Asia (2012) 

Marquis Who's Who in the World (2011)