International Journal

2010 published paper

1. D.H. Ji,  Ju H. Park, W.J. Yoo, S.C.Won and S.M. Lee,  ``Synchronization criterion for Lur’e type complex dynamical networks with time-varying delay'', Physics Letters A , 374,10, Pages 1218-1227, 22 Feb, 2010

2.W.J. Yoo, D.H. Ji, S.C.Won, "Synchronization of two different non-autonomous chaotic systems using fuzzy disturbance observer" , Physics Letters A , 374 Pages 1354-1361,1 Mar, 2010 

3. S.M. Lee, S.J. Choi, D.H. Ji, Ju H. Park and S.C.Won, ``Synchronization for chaotic Lur'e systems with sector restricted nonlinearities via delayed feedback control'', Nonlinear Dynamics, 59, 277-288, 2010

2009 published paper

1. D.H. Ji, Ju H. Park, W.J. Yoo  and S.C.Won,  ``Robust Memory State Feedback Model Predictive Control for Discrete-Time Uncertain State Delayed Systems'', Applied Mathematics and Computation 215 2035–2044, 2009

2. D.H Ji, Ju H. Park, S.C Won "Master slave synchronization of Lur'e systems with sector and slope restricted nonlinearities, Physics Letter A, Volume 373, Issue 11, March, 2009

3. Ju H. Park, D.H Ji, S.C Won, S.M. Lee, "Adaptive H infinity synchronization of unified chaotic systems", Modern physics letter B , Volume 23, No 8, p.1-13, April, 2009

4. Ju H. Park, D.H. Ji, S.C. Won, S.M. Lee, S.J. Choi, "H infinity control of Lur'e sysetms with sector and slope restricted nonlinearities,  Physics Letters A Volume 373 3734–3740, 2009

2008 published paper

1. Ju H. Park, D.H Ji, S.C Won, S.M. Lee, "H infinity synchronization of time delay chaotic systems", Applied Mathematics and Computation, Volume 204, p.170-177, Oct, 2008

2. S.M. Lee, D.H Ji, Ju H. Park, S.C Won "H infinity synchronization of chaotic systems via dynamic feedback approach", Physics Letter A, Volume 372, Issue 27, p. 4905-4912, July 2008

2007 published paper

1. S.M. Lee, Ju H Park, D.H. Ji, S.C. Won "A robust model predictive control for LPV systems using relaxation matrices", IET Control Theory & Applications Volume 1, Issue 6 p. 1567-1573 Nov 2007

Accepted paper

1. D.H. Ji,  Ju H. Park, S.M.Lee, J.H. Koo and S.C. Won,  ``Synchronization criterion for Lur’e systems via delayed PD controller'', submitted to Journal of optimization theory and Applications,accpeted. 

2. W.J. Yoo, D.H. Ji, S.C.Won,``Adaptive fuzzy synchronization of different chaotic systems with stochastic unknown parameters '', Modern physics letter B, accepted. 

Paper submttied to International Journal

Domestic Journal

Paper submttied to Domestic Journal

International Conference

1. D.H. Ji, W.J. Yoo, S.M. Lee, Ju H. Park and S.C. Won, "Robust model predictive control for uncertain singular systems with state delay",  SICE-ICCAS 2009, Aug 18-21, Fukuoka, JAPAN, submitted.

2. W.J. Yoo, D.H. Ji, C.J. Choi, Ju H. Park and S.C. Won, "A constrained robust model predictive control using modified fuzzy disturbance observer for continuous time systems with polytopic uncertainty", SICE-ICCAS 2009, Aug 18-21, Fukuoka, Japan, submitted

3. Daehyun Ji, Sangchul Won, Woojong Yoo and Juhyun Park "The synchronization of Lur'e chaotic systems and application in secure communications", ISET 2009, May 21-22, Daegu, Korea

4.W.J. Yoo, D.H. Ji, and S.C. Won, "Robust Synchronization of Uncertain Chaotic Systems based on Fuzzy Disturbance Observer," MIC 2009, February 16-18, Innsbruck, Austria

5. Jahoo Koo, Seungjoon Choi, Daehyun Ji and Sangchul Won, "Nonlinear Observer Based Trajectory Tracking Control for a Wheeled Mobile Robot", SICE Annual Conference, Aug. 20-22, 2008, UEC, Chofu, Tokyo, Japan

6.Daehyun Ji, Woojong Yoo, Sangsu Yeh and Sangchul Won, "Robust Model Predictive Control for Uncertain State Delayed System Using Polytope Dependent Lyapunov Function," SICE Annual Conference 2007,Sept. 17-22, 2007, Kagawa Univ., Japan

7. Woojong Yoo, Youngsoo Kim, Sehoon Kim, Daehyun Ji, Dowan Kim, Jooman Kim and Sangchul Won, "Development of bending gap measurement and position control technique for unmanned slab crane," SICE 2007, Sept. 17-22, 2007, Kagawa Univ., Japan

8. Woojong Yoo, Daehyun Ji and Sangchul Won, "A new fuzzy stabilizer with tuning parameters," SICE Annual Conference 2007, Sept. 17-22, 2007, Kagawa Univ., Japan

9. Sangsu Yeh, Daehyun Ji, Woojong Yoo and Sangchul Won, "Efficient Fuzzy-MPC for Nonlinear systems : rule rejection", SICE-ICCAS 2006, Oct. 18-21, 2006 in Bexco, Busan, Korea

10. Daehyun Ji,Woojong Yoo,Sangmoon Lee and Sangchul Won, "Dynamic output feedback H infinity receding horizon controller design for uncertain discrete-time system with parameter dependent Lyapunov function",ICICS2005,DEC 5th~9th,Bangkok

11. Woojong Yoo, Daehyun Ji, Sangmoon Lee and Sangchul Won, "Output feedback model predictive control for Wiener model with parameter dependent Lyapunov function", ICCAS 2005, June 2-5, KINTEX, Gyeonggi-Do, Korea (IC)

12. Daehyun Ji, Sangmoon Lee, Sangun Kim, Sunjang Kim and Sangchul Won, "Developement of Optimal Control System for Air Seperation Unit", ICCAS 2004, August 25-27, The Shangri-La Hotel, Bangkok, Thailand.

Domestic Conference

▶ Project

1. Development of Optimal Control System for Air Separation Unit ( 2002.01.01 - 2004.04.05) with POSCO

2. Implementation of OPC client to measure the sensor value for Air seperation unit ( 2005.01.01 - 2005.05.05) with POSCO and POSTECH Mechnical Eng dep.

3. Development of Slab bending gap measurement and Tong position control technique for slab unmanned crane ( 2006.01.01 - 2007.01.01) with POSCO

4. Development of a new model predictive control algorithm for hardware architecture design(2007.01.01~) with GIFT

▶ Industrial Activity

2009.9~ SEC

2009.9~ Listed in Marquis Who's Who in the World

2010.1~ 대한 임베디드 공학회 기획위원

International Journal

Reviewer, Applied Mathematics and Computation

Reviewer, International Journal of Control, Automation and Systems (IJCAS)

Reviewer, Journal of Flanklin Institute

Domestic Journal

Reviewer, Journal of Korean Institute of Electrical Engineers

▶ Research Group

1. Prof. Jessie Park in YeungNam Univ (Time delay system, Chaotic system, Applied mathematics, Robust control, Nonlinear analysis)

2. Prof. S.M. Lee in DaeGu Univ (Model predictive control, Robust control, LPV system, SOFC)

3. Dr. David Choi in Samsung Heavy Industry (Computer vision, Nonlinear system)

4. Prof. O.M. Kwon in Chungbuk National Univ (Time delay system, LMI application)

5. Dr. W.J. Yoo in Samsung Electronics(Adaptive control, Nonlinear system, Fuzzy system, Linux OS, Smart Phone)

6. Mr.J.H. Koo in POSTECH (Mobile Robot, CDN, GRN)

7. Mr.D.W.Lee in POSTECH (Computer Vision, Image processing)

8. POSTECH Controllab