Ji-Chul Ryu

Assistant Professor, Mechanical Engineering
Email: jryu@niu.edu
Tel: 815-753-9035

Educational

  • Ph.D. in Mechanical Engineering, University of Delaware, 2009
  • M.S. in Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 1999
  • B.S. in Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 1997

Research Interests

Integrated Planning and Control of Autonomous Mobile Robots and Mobile Manipulators,Intelligent Assistive Technologies with Mobile Robot Systems, Dynamic Nonprehensile Robotic Manipulation, and Nonlinear Dynamic Systems Modeling and Control.

Work Experience

  • Department of Mechanical Engineering, NIU (2013-present)
  • Postdoctoral Fellow, Neuroscience and Robotics Lab, Northwestern University (2010-2013)
  • Supplemental Professional, Mechanical Systems Laboratory, University of Delaware (2009-2010)
  • Research Assistant, Mechanical Systems Laboratory, University of Delaware (2005-2009)
  • Research Engineer, Mechatronics Center, Samsung, Korea (2002-2004)
  • Assistant Research Engineer, Daewoo Heavy Industries and UBprecision, Korea (1999-2002)

Professional Associations and Honors

  • Recipient of the MSC Simulation Software Award at the 2007 ASME International Design Engineering TechnicalConferences
  • Member of Editorial Board of the international journal of "Advances in Robotics Research (ARR)"
  • Member of the American Society of Mechanical Engineers (ASME), affiliated with Dynamic Systems & Control Division, 2005-present
  • Member of the Institute of Electrical and Electronics Engineers (IEEE), affiliated with Robotics and Automation Society, 2005-present

Patent

  • Intelligent Powered Mobility for Infants and Special Needs Children, Patent No. US8090488, 2012

Selected Publications

  • J.-C. Ryu, F. Ruggiero, and K. M. Lynch, "Control of Nonprehensile Rolling Manipulation: Balancing a Disk on a Disk," IEEE Transactions on Robotics, in print.
  • J. Gomez, J.-C. Ryu, S. Alonso, and S. K. Agrawal, "Development and Validation of Globally Asymptotically Stable Control Laws for Automatic Tractor Guidance," Applied Engineering in Agriculture, Vol. 27, No. 6, pp. 1099-1108, 2011.
  • J.-C. Ryu and S. K. Agrawal, "Differential Flatness-based Robust Control of Mobile Robots in the Presence of Slip," The International Journal of Robotics Research, Vol. 30, No. 4, pp. 463-475, 2011.
  • C. P. Tang, P. T. Miller, V. N. Krovi, J.-C.Ryu and S. K. Agrawal, "Differential Flatness-based Planning and Control of a Wheeled Mobile Manipulator – Theory and Experiment", IEEE/ASME Transactions on Mechatronics, Vol. 16, No. 4, pp. 768-773, 2011.
  • J.-C. Ryu and S. K. Agrawal, "Planning and Control of Under-actuated Mobile Manipulators Using Differential Flatness," Autonomous Robots, Vol. 29, No. 1, pp. 35-52, 2010.
  • J.-C. Ryu, V. Sangwan, and S. K. Agrawal, "Differentially Flat Designs of Under-Actuated Mobile Manipulators," ASME Transactions, Journal of Dynamic Systems, Measurement, and Control, Vol. 132, No. 2, 024502, 2010.
  • R. Bostelman, J.-C. Ryu, T. Chang, J. Johnson, and S. K. Agrawal, "An Advanced Patient Lift and Transfer Device for the Home," ASME Transactions, Journal of Medical Devices, Vol. 4, No. 1, 011004, 2010.
  • A. Lynch, J.-C. Ryu, S. K. Agrawal, and J. C. Galloway, "Power mobility training for a 7-month-old infant with spina bifida," Pediatric Physical Therapy, Vol. 21, No. 4, pp. 362-368, 2009.
  • J.-C. Ryu, S. K. Agrawal and J. Franch, "Motion Planning and Control of a Tractor with a Steerable Trailer Using Differential Flatness," ASME Transactions, Journal of Computational and Nonlinear Dynamics, Vol. 3, No. 3, 031003, 2008.
  • J.-C. Ryu, K. Pathak, and S. K. Agrawal, "Control of a Passive Mobility Assistive Robot," ASME Transactions, Journal of Medical Devices, Vol. 2, No. 1, 011002, 2008.
  • J. C. Galloway, J.-C.Ryu, S. K. Agrawal, "Babies driving robots: Self-generated mobility in very young infants," Journal of Intelligent Service Robotics, Vol. 1, No. 2, pp. 123-134, 2008.
  • S. K. Agrawal and J.-C.Ryu, "Design of Dissipative and Stable Assist Robots," ASME Transactions, Journal of Mechanical Design, Vol. 129, No. 12, pp. 1251-1255, 2007.
  • S.-R. Oh, J.-C.Ryu, and Sunil K. Agrawal, "Dynamics and Control of Helicopters with a Six-Cables Suspended Robot," ASME Transactions, Journal of Mechanical Design, Vol. 128, No. 5, pp. 1113-1121, 2006.

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