Engineer Control

Hui Yan

Email: *********@********.***

Address: 308B McGregor Drive

City: Chapel Hill

State: NC

Zip: 27514

Country: USA

Phone: 979-***-****

Skill Level: Experienced

Salary Range: $70,000

Willing to Relocate

Primary Skills/Experience:

See Resume

Educational Background:

See Resume

Job History / Details:

Hui Yan

308B McGregor Drive Phone: 979-***-****

Chapel Hill, NC 27514 E-mail: *********@********.***

OBJECTIVES

A challenging Senior Engineer position with a company that will benefit from my abilities:

Guidance, Navigation and Control / Trajectory Simulation / Vehicle Dynamics Engineer

SUMMARY OF QUALIFICATIONS

12 years academic research experience on optimal vehicle trajectory design and attitude control

6 years aerospace industry experience on launching vehicle trajectory design and flight test analysis

Publish 26 journal papers and 27 conference papers on rocket and spacecraft dynamics and control

SKILLS

Computer languages: Matlab, Fortran and C

Microsoft office software: Word, Excel, and PowerPoint

Optimal control package: DIDO

EDUCATION

Ph.D. Aerospace Engineering Texas A&M University 2006

M.E. Aerospace Engineering Northwestern Polytechnical University, China 1990

B.E. Aerospace Engineering Beijing Institute of Technology, China 1984

REVELVANT COURSES

Spacecraft Dynamics and Control, Optimal Spacecraft Attitude and Orbital Maneuvers, Celestial Mechanics, Aerodynamics, Flight Mechanics, Feedback Control of Dynamics System, Digital Control of Aerospace Systems, Estimation of Dynamic Systems, Principles of Fluid Motion, Continuum Mechanics, Nonlinear Dynamics, Advanced Spacecraft Dynamics and Control, Project Management.

SELECTED ACHIEVEMENTS

Fast endpoint to endpoint path planning: worked on Moon-Earth fuel-optimal aborting trajectory design and Earth-Moon trajectory design and guidance scheme with high thrust and low thrust, funded by NASA as a cooperator and awarded by Chinese National Science Foundation as a PI, and wrote a chapter for the well-known professional Chinese book "Spacecraft Orbital Dynamics and Control".

Multiple agent flight cooperation: investigated formation flying design and control for linear and nonlinear system, developed a least squares and state transition matrix method to design and keep satellite formation without fuel expenditure.

Real-Time computational optimal control: The pseudospectral methods have been used very effectively in solving a wide variety of nonlinear optimal control problems and applied to International Space Station flight experiment. I used pseudospectral methods to solve time-optimal spacecraft attitude maneuver with magnetic torque and control moment gyroscope towards real-time applications.

Pseudospectral feedback control: Proposed a pseudospectral feedback control law for time-varying LQR problems. The research was studied as I was an internationally competitive National Research Council (NRC) research associate awarded by NRC. The control law achieves the solutions of the LQR problems without solving Riccati equations and the computational speed improves one order of magnitude. The method has been seen effectively in the three-axis spacecraft attitude stabilization and formation flying maintenance.

WORK AND RESEARCH EXPERIENCE

Assist Project Scientist, Dept. of Applied Mathematics and Statistics, University of California at Santa Cruz, 5/2009-7/2012,

* Fuel-optimal Moon to Earth aborting trajectory design

* Fast spacecraft attitude maneuver using control moment gyroscope

* Programming and debugging general Jacobian matrix for the package DIDO

Postdoc, Dept. of Aerospace Engineering, Texas A&M University, 9/2006-5/2009,

* Formation flying design and maintenance

* Initialization of real-time optimal control

Research assistant, Dept. of Aerospace Engineering, Texas A&M University, 9/2001-8/2006,

* Magnetic spacecraft attitude maneuver and stabilization

* Formation flying design and control

NRC research associate, Dept. of Mechanical and Astronautical Engineering, Naval Postgraduate School, 3/1999-8/2001,

* Trajectory optimization and guidance using pseudospectral methods

Postdoc, Chinese Academy of Space Technology, 9/1996-2/1999,

* Optimization and guidance for Earth to Moon transfer

Engineer, China National Space Administration, 5/1990-8/1993,

* Launching vehicle trajectory design and flight test analysis

Assistant Engineer, China National Space Administration, 9/1984-8/1987,

* Rocket engine design and experiment

SELECTED JOURNAL PUBLICATIONS

1. Yan, H. and Gong, Q., "Feedback Control for Formation Flying Maintenance Using State Transition Matrix," Journal of the Astronautical Sciences, Accepted

2. Yan, H., Gong, Q., Park, C., Ross, I. M., and D'souza, C. N., "High Accuracy Trajectory Optimization for a Trans-Earth Lunar Mission," ", Journal of Guidance, Control and Dynamics, Vol. 34, No. 4, 2011

3. Sekhavat, P., Yan, H., Fleming, A., Ross, I. M., and Alfriend, K. T., "Close-Loop Time-Optimal Attitude Maneuvering of Magnetically Actuated Spacecraft," Journal of the Astronautical Sciences, Vol. 58, No. 1, 2011

4. Yan, H, Alfriend, K.T., Vadali, S. R., and Sengupta "Optimal Design of Satellite Formation Relative Motion Orbits Using Least Squares Methods", Journal of Guidance, Control and Dynamics, Vol. 32, No. 2, 2009

5. Vadali, S. R., Sengupta, P., Yan, H., and Alfriend, K. T., "On the Fundamental Frequencies of Relative Motion and the Control of Satellite Formations", Journal of Guidance, Control and Dynamics, Vol. 31, No. 5, 2008.

6. Yan, H., and Alfriend, K. T., "Approximate Minimum Energy Control Laws for Low-Thrust Formation Reconfiguration," Journal of Guidance, Control and Dynamics, Vol. 30, No. 4, 2007.

7. Yan, H., Ross, I. M., and Alfriend, K. T., "Pseudospectral Feedback Control for Three-Axis Magnetic Attitude Stabilization in Elliptic Orbits," Journal of Guidance, Control and Dynamics, Vol. 30, No. 4, 2007.

8. Alfriend, K. T., and Yan, H., "Evaluation and Comparison of Relative Motion Theories," Journal of Guidance, Control and Dynamics, Vol. 28, No. 2, 2005.

9. Lee, D.-W., Cho, K.-R., and Yan, H., "Re-entry Trajectory Tracking via an Inverse Dynamics Method," KSME International Journal, Vol. 18, No. 9, 2004.

10. Yan, H., and Wu, H., "Optimal Low-Thrust Earth-Moon Targeting Strategy for N-Body Problem," Journal of Guidance, Control, and Dynamics, Vol., 24, No., 3, 2001.

11. Chen, S., Yan, H., Cai, Y., and Zhu, X., "Progress and Development of Space Technology in China", Acta Astronautica, Vol. 46, No. 9, 2000

12. Yan, H., and Wu, H., "Initial Adjoint Variable Guess Technique and Its Application in Optimal Orbit Transfer," Journal of Guidance, Control and Dynamics, Vol. 22, No. 3, 1999.

OTHERS

US permanent resident

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