Younkoo (John) Jeong

Post-doctoral researcher, Ph.D 

Precision Measurement & Control Lab. & Mechano-biology Lab.

EDUCATION       

• The Ohio State University, Columbus, OH  : Ph.D  in Mechanical Engineering, Sep.2003~Mar. 2009
• Yonsei University, Seoul, KOREA : Master of Engineering in Mechanical Engineering, Feb. 1994
• Yonsei University , Seoul, KOREA : Bachelor of Science in Mechanical Engineering, Feb. 1992

RESEARCH AREA

• Applications : Simultaneous material property mapping of living cells / Dynamic force probing
• Advanced instrumentation & integration: Design and implementation of high speed Atomic Force Microscopy
• Design and fabrication : Active multi-axis micro actuators
• High speed real-time control system: Implementationof customized high speed digital controller with peripherial devices (20Mhz closed loop rate) and its application

EXPERIENCE

Postdoctoral Researcher at The Ohio State University (April, 2009 ~ current)

• Dynamic force probing and real-time mechanical property estimation of live cells
• High Speed Actuation System & its application  

Research Associate at The Ohio State University (Sep. 2003-Mar. 2009)

• Direct Force Control Method for Atomic Force Microscopy: a New Mode for AFM operation using Model Based Estimator and Predictor
• High Speed Actuation System: High Bandwidth Nano-Actuators using Magnetic Force and Digital Model Cancellation Method
• Implementation of Ultra-fast Digital Controller: FPGA-based Digital Controller (20Mhz closed loop time)

Teaching Assistantship at the Ohio State University (2004, 2005, 2008)

• Lab. Course development for Applied Digital Control class (ME773) : Introduction to dspace, system identification, compensator design, direct controller design, high speed tracking control using zero-phase-error-tracking-controler, disturbance estimator design and its application

Research Scientist at Microsystem Research Center, KIST, Korea (Sep.1999 – June 2003)

• Micro Capsule System: Actuator module for Micro Capsule Endoscope
• Robotic Colonoscope System: Design of Robotic Colonoscope and Control System
• Wearable Exo-skeleton Robot Arm: Design of Wearable Robot (RoboWear)

Research Engineer at Kia Technical Center, Kia Motors, Korea (Jan.1994 - Aug.1999)

• System Control Method for Optimized Power efficiency of Hybrid vehicles: Power Control to optimize the power efficiency of power components in Hybrid vehicles
• Active 4 Wheel Steering Mechanism: Design and Implementation of Digital Controller for Active 4 Wheel Steering System

AWARDS

KSME Technical Award : 2002 on "Robotic colonoscope system"

MEMBERSHIP

IEEE member, KSEA member

PUBLICATION

Publications on Peer Reviewed Journals

• Design and fabrication of active multi-axis probing system for high speed atomic force microscopy, Younkoo Jeong, G. R. Jayanth, Sissy Jhiang and Chia-Hsiang Menq, IEEE transactions on nanotechnology, accepted for publication (2009) 
• Control of tip-to-sample distance in atomic force microscopy: A dual-actuator tip-motion control scheme  , Younkoo Jeong, G. R. Jayanth, and Chia-Hsiang Menq , Rev. Sci. Instrum. 78, 093706 (2007)
• Direct tip-position control using magnetic actuation for achieving fast scanning in tapping mode atomic force microscopy  , G. R. Jayanth, Younkoo Jeong, and Chia-Hsiang Menq, Rev. Sci. Instrum. 77, 053704 (2006)
• Direct tip-sample interaction force control for the dynamic mode atomic force microscopy  ,  Younkoo Jeong, G. R. Jayanth, Sissy M. Jhiang, and Chia-Hsiang Menq , Appl. Phys. Lett. 88, 204102 (2006)
• Analysis for Movement Characteristics of Pneumatic Impulsive Actuator for Robotic Colonoscope, Jinhee Lee, Younkoo Jeong, Byungkyu Kim and Jong-Oh Park, KSME, pp.1638-1644, A, Vol.26, No.8, (2002)

Publications in Proceedings of Internationals Conferences

• System level analysis for a locomotive inspection robot with integrated microsystems, Younkoo Jeong, Byungkyu Kim and Jong-Oh Park, 2003 MSM (2003)
• Functional colonoscope robot system, Byungkyu Kim, Younkoo Jeong, Hyun-young Lim, Jong-Oh Park, Arianna Menciassi, Paolo Dario, ICRA 2003: 1092-1097 (2003)
• A ciliary based 8-legged walking micro robot using cast IPMC actuators, Byungkyu Kim, Jaewook Ryu, Younkoo Jeong, Younghun Tak, Byungmok Kim, Jong-Oh Park, ICRA 2003: 2940-2945 (2003)
• A Ciliary Based 8-legged Walking Micro Robot Using Cast IPMC Actuators, Byungkyu Kim, Jaewook Ryu, Younkoo Jeong, Younghun Tak, Byungmok Kim, Jong-Oh Park,  in Proc. Of IEEE Int. Conf. on Robotics & Automation, (2003)
• A Ciliary Motion Based 8-legged Walking Micro Robot Using Cast IPMC Actuators, Jaewook Ryu, Younkoo Jeong, Younghun Tak, Byungmok Kim, Byungkyu Kim, Jong-Oh park, 2002 International Symposium on Micromechatronics and Human Science, pp. 85, (2002)
• A Locomotive Mechanism for a Robotic Colonoscope, Byungkyu Kim, Hun-Young Lim, Kyoung-Dae Kim, Younkoo Jeong and Jong-Oh Park, 2002 IEEE/RSJ International Conference on Intelligent Robots and Systems, September 30-October 4, (2002), Switzerland.
• Smart Colonoscope System, Byungkyu Kim, Younkoo Jeong, Hun-Young Lim, Tae Song Kim, Jong-Oh Park, Paolo Dario, Arianna Menciassi and Hyouk-Ryeol Choi, 2002 IEEE/RSJ International Conference on Intelligent Robots and Systems, September 30-October 4, (2002), Switzerland.
• Development of Microrobotic Devices for Locomotion in the Human Gastrointestinal Tract, L.Phee, A.Arena, S.Gorini, A.Menciassi, P. Dario, Y.K. Jeong and J.O.Park, International Conference on Computational Intelligence, Robotics and Autonomous Systems (CIRAS 2001), November 28-30, (2001), Singapore
• Design and Control of a Wearable Robot, Younkoo Jeong, Yoon Kyong Kim, Kyunghwan Kim and Jong-Oh Park, 10th IEEE Intl. Workshop on Robot and Human Interactive Communication (ROMAN 2001), Bordeaux-Paris, Sept 18-21, (2001).
• Human Arm Motion Detection System for RobotIc Teleoperation using Electrical Bio-Impedance Method, Soo Chan Kim, Ki Chang Nam, Deok Won Kim, Younkoo Jeong, Keunyoung Kim and Kyunghwan Kim, XI International Conference on Electrical Bio-Impedance, Oslo in Norway, Jun 17-21, (2001)
• A Rapid Error-Measuring Strategy for NC Machines, Kyunghwan Kim, Eunha Song, Changho Kim, Younkoo Jeong, and Man Suhk Suh, 32nd International Symposium on Robotics (ISR2001), Seoul, Korea, April (2001).
• A Biological Man-Machine Interface for Teleoperation, Keun-Young Kim, Younkoo Jeong, Deok-Ho Kim, Kyunghwan Kim and Jong-Oh Park,  32nd International Symposium on Robotics (ISR2001), Seoul, Korea, April (2001).
• A 7 DOF Wearable Robotic Arm Using Pneumatic Actuators, Younkoo Jeong, Yongseon Lee, Kyunghwan Kim, Jong-Oh Park and Yeh-Sun Hong, 32nd International Symposium on Robotics (ISR2001), Seoul, Korea, April (2001).
• A Wearable Robotic Arm with High Force-Reflection Capability, Younkoo Jeong, Kyunghwan Kim and Jongoh Park, 9h IEEE Intl. Workshop on Robot and Human Interactive Communication (ROMAN 2000).
• Development of the steering angle sensor for vehicle dynamic system, Y.K.Jeong, D.Y.Kim, and K.S.Kim, AVEC98, (1998)
• Design of Rear Wheel Steering Controller with Modified Trajectory Control Algorithm, Y.K.Jeong, D.Y.Kim, K.S.Kim and S.G.Lee, APVC, (1997)

PATENT

US PATENTS

• US Patent-6719684: Micro capsule type robot,  Byungkyu Kim, Jong-Oh Park, Younkoo Jeong, Taesong Kim, Siyoung Song
• US Patent 7022068: Endoscope system with a hollow cylinder and a bellows moving mechanism,  Byungkyu Kim, Paolo Dario, Jong-Oh Park, Tae-Song Kim, Younkoo Jeong, Hun-Young Lim
• USA Patent No.5810108: Failure safe devices for rear-wheel steering system
• USA Patent No.5754091: Potentiometer-type steering sensor
• USA Patent No.5734160: Automobile steering angle sensor with a humidity moving member and a spiral shape resistance body

KOREA PATENTS

• Korea Patent No. 0334411: Active 4 wheel steering device (2002)
• Korea Patent No. 251080: Micro controller using double microprocessors for the rear steering system (2000)
• Korea Patent No. 250200: Controller for the 4 wheel steering vehicle using yaw rate feedback (2000)
• Korea Patent No. 244114: Steering limitation method for the active front steering vehicle (1999)
• Korea Patent No. 240499: Fail-safe method to return the steering angle to its neutral position with the electronic clutch (1999)

BOOK (translated & edited versions)

• Younkoo Jeong, Using windows 98, Infobook, 1999
• Younkoo Jeong, Seungho Kim, Running Windows 98, Jungbo pub., 1998
• Younkoo Jeong, Sunsong Hong, Active Server Page for the Beginners, Jungbo pub., 1998
• Younkoo Jeong, CGI Programming for Beginners, Infobook, 1998
• Younkoo Jeong, Netscape 4.0 Web Publishing, Infobook, 1998
• Younkoo Jeong, Visual Basic 5.0 Web Database, Jungbo pub., 1997

SKILLS

SOFTWARE

• System modeling and analysis - Matlab/Simulink
• Control system design – Matlab/Simulink, MatrixX, ControlDesk (dSpace)
• Code based language - C++, C,  Pascal, VHDL,
• Measurement and analysis: Labview, Igor-pro
• Drawing tool - Pro/Engineer, Solidworks, AutoCad
• Structure analysis – Ansys

HARDWARE

• Data acquisition: NI boards (AD/DA)
• Digital Controller: dSpace
• Home-built Ultra Fast Digital Controller: FPGA(Field Programmable Gate Array) based Digital Controller
• General Electronics: Circuits with OP Amps, Analog Filters, Power Amplifiers
• Measurement: AFM - MFP 3D, Asylum Research; PicoScan, Agilent, SEM