Education
Professional Experience
Assistant Professor 
Department of Mechanical and Aerospace Engineering
Florida Institute of Technology 
Aug 2008present 

Visiting Scholar 
Department of Aerospace Engineering
University of Michigan 
May 2009Jun 2009 

Postdoctoral Scholar 
Department of Aerospace Engineering
University of Michigan 
May 2008Jul 2008 

Military Service 
Second lieutenant, Tactical Control Officer The 3rd Air Defense Artillery Division, Republic of Korea Air Force

20012004 
Research Grants
NSF CMMI Dynamic Systems #1029551 (PI) 
20102013 
Computational Geometric Uncertainty Propagation for Hamiltonian Systems on a Lie Group ($149977) 
Faculty Professional Development Grant, Florida Institute of Technology (PI) 
2010 
Development of an Autonomous Quadrotor UAV for Educational Research 
Federal Aviation Administration (coI) 
2010 
FAA Center of Excellence for Commercial Space Transportation 
Director's Research and Development Fund, JPL, NASA (coPI: under second round review) 
20112012 
Development of HighFidelity Geometric Numerical Integration Techniques for Tethered Spacecraft Missions 
Honors & Awards
Best Student Course Evaluation, Mechanical and Aerospace Engineering, Florida Institute of Technology 
2010 
Distinguished Dissertation Award, honorable mention, College of Engineering, University of Michigan 
2009 
Distinguished Achievement Award, University of Michigan 
2008 
Ivor K. McIvor Award, College of Engineering, University of Michigan (outstanding research in applied mechanics) 
2008 
SIAM Conference on Computational Science & Engineering, BGCE Student Paper Prize, finalist 
2007 
Rackham Predoctoral Fellowship, Horace H. Rackham School of Graduate Studies, University of Michigan 
20062007 
Rackham International Students Fellowship, Horace H. Rackham School of Graduate Studies, University of Michigan 
2006 
Rackham Travel Grant, Horace H. Rackham School of Graduate Studies, University of Michigan 
Feb. 2006, Aug. 2006 
International Scholarship, Ministry of Education & Human Resources Development, Korea 
2004 
Publications
Computational Geometric Mechanics
 T. Lee, M. Leok, and N. H. McClamroch,
"Geometric numerical integration for complex dynamics of tethered spacecraft,"
in Proceedings of the American Control Conference, 2011, accepted. Available:arXiv:1010.1724.
Animation:
Fig 2(a)
Fig 3(a)
Fig 4(a)
 T. Lee, M. Leok, and N. H. McClamroch,
"Computational Dynamics of a 3D Elastic String Pendulum Attached to a Rigid Body and an Inertially Fixed Reel Mechanism,"
Nonlinear Dynamics, 2010, accepted.
Available:arXiv:0909.2083.
Animation: Fig 2,
Fig 3,
Fig 4
 N. Chaturvedi, T. Lee, M. Leok, and N. H. McClamroch,
"Nonlinear Dynamics of the 3D Pendulum,"
Journal of Nonlinear Science, 2010, accepted.
Available:arXiv:0707.1196.
 T. Lee, M. Leok, and N. H. McClamroch,
"Lagrangian Mechanics and Variational Integrators on TwoSpheres,"
International Journal for Numerical Methods in Engineering, vol. 79, 2009, pp. 11471174, Available:arXiv:0707.0022.
Animation: Fig3.1
Fig3.2
Fig3.3
Fig3.4
Fig3.5
Fig3.6
Fig3.7
 T. Lee, M. Leok, and N. H. McClamroch,
"Dynamics of a 3D Elastic String Pendulum,"
in Proceedings of the IEEE Conference on Decision and Control, 2009, pp. 33473352, Available:arXiv:0903.0332.
Animation: Fig 2
 T. Lee, M. Leok, and N. H. McClamroch,
"Dynamics of Connected Rigid Bodies in a Perfect Fluid,"
in Proceedings of the American Control Conference, 2009, pp. 408413, Available:arXiv:0809.1488.
Animation: Fig 1
 T. Lee, M. Leok, and N. H. McClamroch,
"Lie Group Variational Integrators for the Full Body Problem in Orbital Mechanics," Celestial Mechanics and Dynamical Astronomy, vol. 98, no. 2, pp. 121144, 2007, doi:10.1007/s105690079073x, Animation: Fig2
 T. Lee, M. Leok, and N. H. McClamroch,
"Lie Group Variational Integrators for the Full Body Problem," Computer Methods in Applied Mechanics and Engineering, vol. 196, pp. 29072924, 2007, doi:10.1016/j.cma.2007.01.017, Available:arXiv:math.NA/0508365. Animation: Fig4
 E. Fahnestock, T. Lee, M. Leok, N. H. McClamroch, and D. Scheeres,
"Polyhedral Potential and Lie Group Variational Integrator Computations for the Full Two Body Problem,"
in Proceedings of AIAA/AAS Astrodynamics Specialist
Conference and Exhibit, 2006, Available:arXiv:math.NA/0608695.
 T. Lee, M. Leok, and N. H. McClamroch,
"A Lie Group Variational Integrator for the Attitude Dynamics of a Rigid Body with Application to the 3D Pendulum,"
in Proceedings of the IEEE Conference on Control Application,
Toronto, Canada, Aug 2005, pp. 962967.
Animation: Chaotic Motion
Computational Geometric Control and Optimization
 T. Lee, M. Leok, and N. H. McClamroch,
"Control of Complex Maneuvers for a Quadrotor UAV using Geometric Methods
on SE(3),"
IEEE Transactions on Automatic Control, 2010, submitted.
Available:arXiv:1003.2005.
Animation:
Fig 5
Fig 6
 T. Lee,
"Geometric Tracking Control of the Attitude Dynamics of a Rigid Body on SO(3),"
in Proceedings of the American Control Conference, 2011, accepted. Available:arXiv:1010.1725.
 T. Lee, M. Leok, and N. H. McClamroch,
"Geometric Tracking Control of a Quadrotor Aerial Vehicle on SE(3),"
in Proceedings of the IEEE Conference on Decision and Control, 2010, pp. 54205425.
Available:arXiv:1003.2005.
Animation:
Fig 3,
Fig 4
 T. Lee, M. Leok, and N. H. McClamroch,
"Computational Geometric Optimal Control of Connected Rigid Bodies in a Perfect Fluid,"
in Proceedings of the American Control Conference, 2010, accepted.
Available:arXiv:0909.3871.
Animation: Fig 2,
Fig 3
 T. Lee, M. Leok, and N. H. McClamroch,
"Discrete Control Systems,"
Invited article for the Springer Encyclopedia of Complexity and System Science, Springer, 20022010, 2009. Available:arXiv:0705.3868
 T. Lee, M. Leok, and N. H. McClamroch,
"Computational Geometric Optimal Control of Rigid Bodies,"
Communications in
Information and Systems, special issue dedicated to R. W. Brockett, vol. 8, no. 4, 2008, pp. 445472.
 T. Lee, M. Leok, and N. H. McClamroch,
"Time Optimal Attitude Control for a Rigid Body,"
in Proceedings of the American Control Conference, 2008, pp. 52105215, Available:arXiv:0709.2514.
Animation: Fig1(a),
Fig2(a)
 T. Lee, M. Leok, and N. H. McClamroch,
"Optimal Attitude Control of a Rigid Body using Geometrically Exact Computations on SO(3),"
Journal of Dynamical and Control Systems, vol. 14, no. 4, pp. 465487, 2008, Available:arXiv:math.OC/06014243.
Animation: Fig2(a),
Fig3(a),
Fig4(a),
Fig5(a)
 T. Lee, M. Leok, and N. H. McClamroch,
"A Combinatorial Optimal Control
Problem for Spacecraft Formation Reconfiguration,"
in Proceedings of the IEEE Conference
on Decision and Control, 2007, pp. 53705375, Available:arXiv:math.OC/0702738.
Animation: Fig2
 T. Lee, M. Leok, and N. H. McClamroch,
"Optimal Attitude Control for a Rigid Body with Symmetry,"
in Proceedings of the American Control Conference, 2007, pp. 10731078, Available:arXiv:math.OC/0609482.
Animation: Fig2(a),
Fig3(a),
Fig4(a),
Fig5(a)
 T. Lee, M. Leok, and N. H. McClamroch,
"Optimal Control of a Rigid Body using Geometrically Exact Computations on SE(3),"
in Proceedings of the IEEE Conference on Decision and Control, San Diego, California, Dec 2006, pp. 21702175, Available:arXiv:math.OC/0602588.
Animation: Fig1(a),
Fig2(a),
Fig3(a),
Fig4(a)
 T. Lee, M. Leok, and N. H. McClamroch,
"Attitude Maneuvers of a Rigid Spacecraft in a Circular Orbit,"
in Proceedings of the American Control Conference, Minneapolis, Minnesota, Jun 2006,
pp. 17421747, Available:arXiv:math.NA/0509299.
Animation: Fig2(a), Fig2(b), Fig2(c), Fig3(a)
Estimation/Uncertainty Propagation
 T. Lee, and M. Leok,,
"Computational Geometric Uncertainty Propagation for Hamiltonian Systems on a Lie Group,"
in Proceedings of the NSF CMMI Research and Innovation Conference, 2011.
 T. Lee, M. Leok, and N. H. McClamroch,
"Global Symplectic Uncertainty Propagation on SO(3),"
in Proceedings of the IEEE Conference
on Decision and Control, 2008, pp. 6166, Available:arXiv:math.DS/0803.1515.
 A. Sanyal, T. Lee, M. Leok, and N. H. McClamroch,
"Global Optimal Attitude Estimation using Uncertainty Ellipsoids,"
Systems & Control Letters, vol. 57, no. 3, pp. 236245, 2008, doi:10.1016/j.sysconle.2007.08.014, Available:arXiv:math.OC/0606083.
 T. Lee, A. Sanyal, M. Leok, N. H. McClamroch, and A. Sanyal,
"Propagation of Uncertainty
in Rigid Body Attitude Flows,"
in Proceedings of the IEEE Conference
on Decision and Control, 2007, pp. 26892694, Available:arXiv:math.DS/0702737.
 T. Lee, M. Leok, N. H. McClamroch, and A. Sanyal,
"Global Attitude Estimation with Single Direction Measurements,"
in Proceedings of the American Control Conference, 2007, pp. 36593664, Available:arXiv:math.OC/0609481.
 T. Lee, A. Sanyal, M. Leok, and N. H. McClamroch,
"Deterministic Global Attitude Estimation,"
in Proceedings of the IEEE Conference on Decision and Control, San Diego, California, Dec 2006, pp. 31743179, Available:arXiv:math.OC/0602589.
Nonlinear Flight Control
 T. Lee and Y. Kim,
"Nonlinear Adaptive Flight Control using Backstepping
and Neural Networks Controller,"
Journal of Guidance, Control, and Dynamics,
vol. 24, no. 4, p. 675682, 2001.
 T. Lee and Y. Kim,
"Nonlinear Adaptive Flight Control using Neural Networks
and Backstepping,"
Korean Journal of Control, Automation and Systems Engineering,
vol. 6, no. 12, pp. 10701078, 2000.(*)
 T. Lee, Y. Kim, and D. Kim,
"Stability Analysis of Nonlinear Flight Control
using Neural Networks,"
in Proceedings of the 3rd Asian Control Conference,
Shanghai, China, July 2000.
 T. Lee and Y. Kim,
"Robust Nonlinear Control of Flight Dynamics using Backstepping Controller,"
in Proceedings of the Korean Society for Aeronautical and Space Sciences Fall Conference, Kyoungki, Korea, Nov. 1999.(*)
 J. Ahn, T. Lee, and Y. Kim,
"Realtime Missile Trajectory Optimization using Parameter Optimization,"
in Proceedings of the Japan Society for Aeronautical and Space Sciences (JSASS) 13th International Sessions in 37th Aircraft Symposium,
Tokyo, Japan, Oct. 1999.
 T. Lee and Y. Kim,
"Nonlinear Adaptive Control of Flight Dynamics using Backstepping
and Neural Networks Controller,"
in Proceedings of the Korean Institute of Control,
Automation, and System Engineering 5th Conference,
Yongin, Korea, Oct.
1999.(*)
 J. Ahn, T. Lee, and Y. Kim,
"Real Time Formulation of Missile Trajectory
Optimization using a Parameter Optimization Technique,"
Journal of Korean Society for Aeronautical and Space Sciences,
vol. 27, no. 4, pp. 94103,
1999.(*)
(*) Korean domestic Journal or Conference
Teaching/Research Assistant
Instructor 
MAE5690: Special Topic: Spacecraft Dynamics and Control
MAE5690: Special Topic: Nonlinear Systems
MAE4600: Engineering Astrodynamics
MAE4242: Aircraft Stability and Control
MAE4014: Control Systems
MAE2082: Dynamics
Department of Mechanical and Aerospace Engineering, Florida Institute of Technology

Spring 2011
Fall 2010
Fall 2009
Fall 20082010
Spring 20092011
Spring 2010

Instructor 
Introduction to Control System Engineering,
Engineering Summer Camp for K12 Student, Florida Institute of Technology

Summer 2010 
Instructor 
Parttime (50%) Lecturing on AE740: Analytical and Computational Dynamics, Department of Aerospace Engineering, University of Michigan

Fall 2007 
Invited Talks
Discrete Geometric Mechanics
Young Researchers Workshop on Geometry, Mechanics and Control, University of La Laguna, Spain 
Dec 2010 
Lie Group Variational Integrator for Dynamics and Control of Multibody Systems
Structured Integrators Workshop, University of California, San Diego 
Apr 2010 
Computational Geometric Mechanics and Control of Rigid Bodies
Florida Institute of Technology, Melbourne, Florida 
Feb 2008 
Computational Geometric Mechanics, Control, and Estimation of Rigid Bodies on Lie Groups
SIAM Conference on Computational Science and Engineering, Costa Mesa, California 
Feb 2007 
Optimal Control of a Rigid Body using Geometrically Exact Computations on Lie Groups
Flight Dynamics and Control Student Seminar, University of Michigan 
Oct 2006 
Attitude Maneuvers of a Rigid Spacecraft in a Circular Orbit
Flight Dynamics and Control Student Seminar, University of Michigan 
Nov 2005 
Lie Group Variational Integrator for the Attitude dynamics of a Rigid body
Flight Dynamics and Control Student Seminar, University of Michigan 
Feb 2005 
Symposium and Conference Session Organization
Geometric Control on Nonlinear Manifolds
Invited Session at IEEE Conference on Decision and Control, Atlanta 
Dec 2010 
Synergies and Interplay of Nonlinear Dynamics and Control
Symposium honor of Dr. Harris McClamroch, University of Michigan
"Harris Fest [Conference Report]," IEEE Control System Magazine, vol. 30, no. 5, pp. 8183, 2010. doi:10.1109/MCS.2010.937816 
May 2010 
Professional Service & Memberships
Reviewer: National Science Foundation (NSF), AIAA Journal of Guidance, Control, and Dynamics, IEEE Transactions on Control Systems Technology, IEEE Transactions on Neural Networks, International Journal of Robust and Nonlinear Control, International Journal of Control, International Journal of Adaptive Control and Signal Processing, Control Engineering Practice, Aerospace Science & Technology, International Journal of Aerospace Engineering, Computer Physics Communications, Celestial Mechanics and Dynamical Astronomy, Acta Astronautica, IEEE Conference on Decision and Control, IEEE Multiconference on Systems and Control, American Control Conference, AIAA Guidance, Navigation and Control Conference 
Assessment Cooridnator: University coordinator for Southern Association of Colleges and Schools (SACS) accreditation

Memberships: IEEE Associate Member, AIAA associate Member, SIAM Member
