Department of Mechanical and Aerospace Engineering
MAE Home
Search MAE
Site Map
Contact Us
AE Undergraduate ME Undergraduate Graduate Faculty and Staff Alumni, Friends and Industry
About Us
Academics
Research
Labs and Centers
News
Directories
Calendars

FEN WU
Associate Professor

Education
Ph.D., Mechanical Engineering, University of California at Berkeley, 1995
M.S., Automatic Control, Beijing University of Aeronautics and Astronautics, Beijing, 1988
B.S., Automatic Control, Beijing University of Aeronautics and Astronautics, Beijing, 1985


Research Interests
Control theory; Robust analysis and control; Gain-scheduling control design and implementation; Model approximation; Structure and control interaction analysis; Application of advanced control and optimization techniques to aerospace, mechanical and chemical engineering problems


Professional Experience
2003--present Associate Professor , Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC

1999--2003 Assistant Professor , Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC

1997--1999 Staff Engineer , Dynacs Engineering Company, Houston, TX

1995--1997 Research Associate , Centre for Process Systems Engineering, Imperial College of Science, Technology and Medicine, London, UK

1991--1995 Research Assistant , Department of Mechanical Engineering, University of California, Berkeley, CA

Honors
2001, NASA CAREER Award, NASA Langley Research Center, Hampton, VA

2001, Air Force Summer Faculty Fellowship, Wright-Patterson AFB, OH

1998, Employee Appreciation Certificate, Dynacs Engineering Company, Houston, TX

1998, Nonlinear Control I Session Best Presentation Award, 1998 American Control Conference, Philadelphia, PA

1993, Chevron Fellowship in Mechanical Engineering, University of California, Berkeley, CA

1987, Honor of Excellence for Graduate Study, Beijing University of Aeronautics and Astronautics

1982-1983, Scholarship, Beijing University of Aeronautics and Astronautics


Professional Societies
Memberships

  • Member, American Society of Mechanical Engineers (ASME)
  • Member, American Institute of Aeronautics and Astronautics (AIAA)
  • Member, American Society of Engineering Education (ASEE)
  • Member, Sigma Xi, NC State Chapter

Committees

  • International Program Committee member, IEEE International Symposium on Intelligent Control (ISIC), Houston, TX, 2003
  • Vice-Chair, ASME Optimal and Adaptive Control Technical Committee, 2002-2004.
  • Program Committee member, 2004 American Control Conference, Boston, MA 2004
  • Review Panelist, National Science Foundation, Dynamic Systems & Control Program, 2004
  • Review Panelist, Tennessee state DoD EPSCoR program, 2004
  • Associate Editor, IEEE Conference on Decision and Control/European Control Conference, Seville, Spain 2005

Session Organizer/Chair

  • Robust Control II Session Chair, 6th IEEE Conference on Control Applications , Hartford, CT (1997)
  • Linear Matrix Inequalities Session Co-Chair, 2000 American Control Conference , Chicago, IL (2000)
  • Linear Parameter Varying Systems Session Co-Chair, 39th IEEE Conference on Decision and Control , Sydney, Australia (2000)
  • Control Application II Session Chair, 2002 American Control Conference , Anchorage, AK (2002)
  • Two Sessions Co-Organizer, 2003 International Mechanical Engineering Congress and Exhibition , Washington DC (2003)
  • Linear Parameter Varying Systems Session Chair, 2004 American Control Conference , Boston, MA (2004)
  • Three Sessions Co-Organizer, 2004 International Mechanical Engineering Congress and Exhibition , Washington DC (2004)
  • Robust Control Session Co-Chair, 13th IEEE Conference on Control Applications , Taipei, Taiwan (2004)

Journal Review

  • IEEE Transactions on Automatic Control
  • IEEE Transactions on Control Systems Technology
  • ASME/IEEE Transactions on Mechatronics
  • ASME Transaction on Dynamic Systems, Measurement, and Control
  • ASME Journal of Vibration and Acoustics
  • SIAM Journal on Control and Optimization
  • AIAA Journal of Guidance, Control, and Dynamics
  • Automatica
  • Systems and Control Letters
  • International Journal of Control
  • International Journal of Robust and Nonlinear Control
  • Asian Journal of Control
  • Journal of Vibration and Control
  • Journal of Franklin Institute


Research Group
Current Ph.D. Students

  1. Ke Dong
  2. Youhua Chen

Current M.S. Students

  1. Qian Zheng

Past Graudate Students

  • Juan Jaramilo (MS degree, graduated May 2001)
  • Suat Ege Yildezilou (MS degree, graduated Dec. 2002)
  • Marco Soto (MS degree, graduated May 2003)
  • Baiqin Xu (MS degree non-thesis option, graduated Dec. 2003)
  • Bei Lu (PhD degree, graduated Oct. 2004)


Grants and Projects
Current Research Projects

  • Post-Stall Flight Unsteady Aerodynamic Study and Gain-Scheduled Controller Design (NASA CAREER Award for Dr. Wu) Investitators Fen Wu and Ashok Gopalarathnam Sponsor NASA Langley Research Center (NAG 1-01119) Duration 9/1/2001 - 8/31/2005

    The aim of this multidisciplinary research project is to advance the state of the art in aerodynamic characterization and flight control of aircraft at high post-stall angles of attack. Novel approaches for post-stall aerodynamics using a nonlinear extension to the vortex-lattice method are being developed for steady and unsteady aerodynamic characterization of multiple wings at high angles of attack. The aerodynamic models will then be utilized for control system design to integrate aerodynamic and thrust-vectoring control effectors. Gain-scheduled controller based on systematic LPV control theory will be designed for longitudinal and lateral control.

  • The Integrated Research on Distributed Control for Large-Scale Dynamically-Interconnected Systems Investigator Fen Wu Sponsor National Science Foundation (ECS-0300037) Duration 6/1/2003-5/31/2006

    This project seeks to exploit the connections among communication, control and computation and develop distributed control techniques for large-scale, dynamically-interconnected systems by synthesizing ideas from control theory and optimization techniques. The distributed control strategy will provide interconnected systems with simplified control implementation and improved system reliability. Moreover, significant performance improvement will be achieved by applying on-line optimizations to such complex systems. The distributed control techniques will be applied to a challenging problem of controlling micro-cantilever arrays in AFM, for which the distributed control is envisioned as an enabling technology to realize its full potential.

  • Global/Semi-Global Stabilizing, Local Optimized Gain-Scheduling Control Design for Nonlinear Systems Investigator Fen Wu Sponsor National Science Foundation (CMS-0324397) Duration 6/1/2003-5/31/2006

    This project will focus on global gain-scheduling control development and its application to unmanned aerial vehicle (UAV). The global gain-scheduling control framework will provide a systematic control design technique with optimized local performance and guaranteed global/semi-global stability, and overcome the computational complexity of nonlinear optimal control problem. By exploiting the functional dependency of nonlinear vector field, significantly improved LPV analysis and control design techniques will be developed using the sum-of-squares (SOS) decomposition. The application of proposed gain-scheduling control technique to UAVs will demonstrate increased UAV capabilities, and would greatly improve the performance and safety of commercial, military, and personal aircraft.

Past Projects

  1. Robust, Fixed-Structured CMG Momentum Manager Design,sponsored by NC Space Grant Consortium, $10,000,5/1/2000-4/30/2001
  2. Distributed Control Methodologies for Distributed Parameter Varying Systems, sponsored by NCSU Faculty Research & Professional Development Fund, $10,000, 07/01/2001-6/30/2002
  3. Advanced Aircraft Wing Concept with Micro- and Macro-Morphing Capability (with Dr. A. Gopalarathnam and Dr. M.K. Ramasubramanian), sponsored by NASA National Institute of Aerospace, $35,000, Jan. 2003-Aug. 2003

Publications
Book Chapters

  1. F. Wu and K.M. Grigoriadis, "Actuator Saturation Control via Linear Parameter-Varying Control Methods," in Actuator Saturation Control (V. Kapila and K.M. Grigoriadis Ed.), Marcel Dekker Inc., New York, NY, 2002.

Journal Articles

  1. F. Wu and S.E. Yildizoglu, "Distributed Parameter-Dependent Modeling and Control of Flexible Structures," accepted by ASME Journal of Dynamic Systems, Measurement, and Control , June 2004.
  2. B. Lu, F. Wu, and S. Kim, "LPV Antiwindup Compensation for Enhanced Flight Control Performance," accepted by AIAA Journal of Guidance, Control and Dynamics , Feb. 2004.
  3. B. Lu and F. Wu, "Switching LPV Control Designs using Multiple Parameter-Dependent Lyapunov Functions," Automatica , 40(11):1973-1980, 2004.
  4. F. Wu and M. Soto, "Extended Anti-Windup Control Schemes for LTI and LPV Systems with Actuator Saturations," accepted by International Journal of Robust and Nonlinear Control , 14(15):1255-1281, 2004.
  5. F. Wu and B. Lu, "Anti-Windup Control Design for Exponentially Unstable LTI Systems with Actuator Saturation," Systems and Control Letters , 52(3/4):305-322, 2004.
  6. F. Wu and B. Lu, "On Convexified Robust Control Synthesis," Automatica , 40(6):1003-1010, 2004.
  7. F. Wu, "Distributed Control for Interconnected Parameter-Dependent Systems," IEE Proceedings: Control Theory and Applications , 150(5):518-527, 2003.
  8. K. Tan, K.M. Grigoriadis, and F. Wu, "H inf and L 2 -to-L inf Gain Control of LPV Systems with Parameter-Varying Delays," IEE Proceedings: Control Theory and Applications , 150(5):509-517, 2003.
  9. F. Wu and J.J. Jaramillo, "Computationally Efficient Algorithms for Frequency-Weighted Optimal H inf Model Reduction," Asian Journal of Control , 5(3):341-349, 2003.
  10. F. Wu, "Robust Quadratic Performance for Time-delayed Uncertain Linear Systems," International Journal of Robust and Nonlinear Control , 13(2):153-172, 2003.
  11. F. Wu, A. Packard, and G. Balas, "Systematic Gain-scheduling Control Design: A Missile Autopilot Example," Asian Journal of Control , 4(3):341-347, 2002.
  12. K. Tan, K.M. Grigoriadis, and F. Wu, "Output-Feedback Control of LPV Sampled-Data Systems," International Journal of Control , 75(4):252-264, 2002.
  13. F. Wu, "LMI-based Robust Model Predictive Control Evaluated on An Industrial CSTR Model," Journal of Process Control , 11(6):649-659, 2001.
  14. F. Wu, "A Generalized LPV System Analysis and Control Synthesis Framework," International Journal of Control , 74(7):745-759, 2001.
  15. F. Wu and K.M. Grigoriadis, "LPV Systems with Parameter-varying Time Delays: Analysis and Synthesis," Automatica , 37(2):221-229, 2001.
  16. F. Wu, K.M. Grigoriadis, and A. Packard, "Anti-windup Controller Design using Linear Parameter-varying Control Methods," International Journal of Control , 73(12):1104-1114, 2000.
  17. K.-C. Goh and F. Wu, "Duality and Basis Functions for Robust H 2 Performance Analysis," Automatica , 33(11):1949-1959, 1997.
  18. F. Wu, K.-C. Goh, and S.P.K. Walsh, "Robust H 2 Performance Analysis for A High-purity Distillation Column," Computers and Chemical Engineering , 21(Suppl):S161-S166, 1997.
  19. K.-C. Goh, F. Wu, and S.P.K. Walsh, "Control Design for Nonlinear Process Models using Linear Robust Control Methods: An FCCU Example," Computers and Chemical Engineering , 21(Suppl):S595-S600, 1997.
  20. F. Wu, "Induced L 2 Norm Model Reduction of Polytopic Uncertain Linear Systems," Automatica , 32(10):1417-1426, 1996.
  21. F. Wu, X.H. Yang, A. Packard, and G. Becker, "Induced L 2 Norm Control for LPV Systems with Bounded Parameter Variation Rates," International Journal of Robust and Nonlinear Control , 6(9/10):983-998, 1996.

Conference Papers

  1. S. Prajna, A. Papachristodoulou, and F. Wu, "Nonlinear Control Synthesis by Sum of Squares Optimization: A Lyapunov-based Approach," accepted by Asian Control Conference , Feb. 2004.
  2. F. Wu, "Convexified Robust Control Approach and Its Application to Actuator Saturation Control,'' in Proc. IEEE Conference on Control Applications , pp. 1189-1194, Sept. 2004.
  3. B. Lu and F. Wu, "Switching LPV Control of A High Performance Tactical Aircraft," in Proc. AIAA Conference on Guidance, Navigation and Control , AIAA Paper No. 2004-4999, Aug. 2004.
  4. F. Wu and S. Prajna, "A New Solution Approach to Polynomial LPV System Analysis and Synthesis," in Proc. 2004 American Control Conference , pp. 1362-1367, June 2004.
  5. B. Lu and F. Wu, "Control Design of Switched LPV Systems using Multiple Parameter-Dependent Lyapunov Functions," in Proc. 2004 American Control Conference , pp. 3875-3880, June 2004.
  6. F. Wu and M. Soto, "Extended Anti-Windup Control of LTI Systems with Actuator Magnitude and Rate Saturations," in Proc. 42nd IEEE Conference on Decision and Control , pp. 2786-2791, Dec. 2003.
  7. B. Lu, F. Wu, and S. Kim, "LPV Antiwindup Compensation for Enhanced Flight Control Performance," in Proc. AIAA Guidance, Navigation and Control Conference , AIAA paper No. 2003-5495, Aug. 2003.
  8. F. Wu and B. Lu, "Anti-Windup Control Design for Unstable LTI Systems with Actuator Saturation," in Proc. 2003 American Control Conference , pp. 1224-1229, June 2003.
  9. S.E. Yildizoglu and F. Wu, "Distributed Modeling and Control of Flexible Structures," in Proc. 2002 International Mechanical Engineering Congress and Exhibition , invited paper, June 2002.
  10. F. Wu and S. Kim, "LPV Controller Interpolation for Improved Gain-Scheduling Control Performance," in Proc. of AIAA Guidance, Navigation and Control Conference , AIAA Paper No. 2002-4759, Aug. 2002.
  11. F. Wu, P. Chandler, A. Sparks, and S. Banda, "Autonomous Munitions Cooperative Classification," in Proc. of 1st AIAA Unmanned Aerial Vehicles Conference , AIAA Paper No. 2002-3483, Feb. 2002.
  12. F. Wu, "Improving Robust Control Performance through On-Line Optimization," in Proc. 2002 American Control Conference , pp. 3747-3752, June 2002.
  13. F. Wu. J. Jaramillo, "Numerical Algorithm for Model Reduction of Polytopic Uncertain Linear Systems," in Proc. 2002 American Control Conference , pp. 1748-1752, June 2002.
  14. F. Wu and E. Yildizoglu, "A Distributed Gain-Scheduling Control Design for A Flexible Beam Problem," in Proc. 2002 American Control Conference , pp. 3174-3179, June 2002.
  15. F. Wu, "Delay-Dependent Induced L 2 Norm Analysis and Control for LPV Systems with State Delays," in Proc. 2001 International Mechanical Engineering Congress and Exhibition , Nov. 2001.
  16. F. Wu, "Switching LPV Control Design for Magnetic Bearing Systems," in Proc. 10th IEEE Conference on Control Applications , pp. 41-46, Oct. 2001.
  17. F. Wu, "Distributed Control for Distributed Linear Parameter Varying Systems," in Proc. 2001 American Control Conference , pp. 2498-2502, June 2001.
  18. F. Wu, "An Unified Framework for LPV System Analysis and Control Synthesis," in Proc. 39th IEEE Conference on Decision and Control , pp. 4578-4583, Dec. 2000.
  19. F. Wu, "Robust CMG Momentum Manager Design for the International Space Station," in Proc. AIAA Guidance, Navigation, and Control Conference , AIAA Paper No. 2000-4456, Aug. 2000.
  20. F. Wu, "Robust Quadratic Performance Analysis and Synthesis for Time-delayed Uncertain Linear Systems," in Proc. 2000 American Control Conference , pp. 2486-2490, June 2000.
  21. F. Wu, "Robust H 2 Performance of Uncertain Linear Systems with Bounded Parameter Variations," in Proc. 2000 American Control Conference , pp. 2809-2813, June 2000.
  22. K. Tan, K.M. Grigoriadis, and F. Wu, "Output-Feedback Control of LPV Sampled-Data Systems," in Proc. 2000 American Control Conference , pp. 3687-3691, June 2000.
  23. K. Tan, K. M. Grigoriadis, and F. Wu, "State-Feedback Control of LPV Systems with Time-Delays," in Proc. IASTED International Conference on Control Applications , pp. 88-94, May 2000.
  24. K. Tan, K.M. Grigoriadis, and F. Wu, "State-Feedback Control of LPV Sampled-Data Systems," in Proc. 38th IEEE Conference on Decision and Control , pp. 3894-3899, Dec. 1999.
  25. F. Wu and K.M. Grigoriadis, "LPV-Based Control of Systems with Amplitude and Rate Saturation Constraints," invited paper, in Proc. 1999 American Control Conference , June 1999.
  26. F. Wu, K.M. Grigoriadis, and A. Packard, "Anti-windup Controller Synthesis via Linear Parameter-varying Control Design Methods," in Proc. 1998 American Control Conference , pp. 343-347, June 1998.
  27. F. Wu and K.M. Grigoriadis, "LPV Systems with Parameter-varying Time Delays," in Proc. 36th IEEE Conference on Decision and Control , pp. 966-971, Dec. 1997.
  28. K.M. Grigoriadis and F. Wu, "Integrated H inf Plant/Controller Design using Linear Matrix Inequalities," in Proc. 36th IEEE Conference on Decision and Control , pp. 789-790, June 1997.
  29. F. Wu, "LMI-based Robust Model Predictive Control Evaluated on An Industrial CSTR Model," in Proc. 6th IEEE Conference on Control Applications , pp. 609-614, Oct. 1997.
  30. F. Wu, "Solutions to Frequency Weighted Optimal H inf Model Reduction Problem," in Proc. 1997 American Control Conference , pp. 3861-3862, June 1997.
  31. K.-C. Goh and F. Wu, "Duality for Robust H 2 Performance Analysis," in Proc. 35th IEEE Conference on Decision and Control , pp. 229-230, Dec. 1996.
  32. F. Wu, A. Packard, and G. Balas, "LPV Control Design for Pitch-axis Missile Autopilots," in Proc. 34th IEEE Conference on Decision and Control , pp. 188-193, Dec. 1995.
  33. F. Wu, X.H. Yang, A. Packard, and G. Becker, "Induced L 2 Norm Control for LPV Systems with Bounded Parameter Variation Rates," in Proc. 1995 American Control Conference , pp. 2379-2383, June 1995.
  34. F. Wu and A. Packard, "Optimal LQG Performance of Linear Uncertain Systems using State-feedback," in Proc. 1995 American Control Conference , pp. 4435-4439, June 1995.
  35. F. Wu and A. Packard, "LQG Control Design for LPV Systems," in Proc. 1995 American Control Conference , pp. 4440-4444, June 1995.
  36. X.H. Yang, F. Wu, and A. Packard, "Adaptive Control of Full Information Problem," in Proc. 1995 American Control Conference , pp. 3371-3372, June 1995.
  37. F. Wu, X.H. Yang, A. Packard, and G. Becker, "Controlling LPVs with Induced L 2 -norm Performance and Bounds on Parameter Variation Rates," in Proc. 32nd Annual Allerton Conference on Communications, Control, and Computing , pp. 1-10, Oct. 1994.
  38. A. Packard and F. Wu, "Control of Linear Fractional Transformations," in Proc. 32nd IEEE Conference on Decision and Control , pp. 1036-1041, Dec. 1993.
  39. F. Wu, A. Packard, and K. Poolla, "Recursive Methods for Model Validation," in Proc. 1993 American Control Conference , pp.104-106, June 1993.

Invited Seminars

  1. Switching LPV control designs using multiple Lyapunov functions, presented at University of Virginia, Charlottesville, VA, Nov. 2003.
  2. Anti-windup control for exponentially unstable systems wit actuator saturation, presented at Beijing University of Aeronautics and Astronautics, Beijing, China, Jan. 2003.
  3. Anti-windup control for exponentially unstable systems wit actuator saturation, presented at Chinese Academy of Sciences Institute of Automation (CASIA), Beijing, China, Jan. 2003.
  4. A generalized LPV synthesis framework and its extension to distributed parameter systems, presented at Wright Patterson Air Force Research Laboratory, Dayton, OH, Nov. 2000.
  5. An unified framework for LPV system analysis and control synthesis, presented at University of Virginia, Charlottesville, VA, Mar. 2000.
  6. Induced L 2 norm control for LPV systems with bounded parameter variation rates, presented at Leicester University, Leicester, England, Feb. 1996.
  7. Linear matrix inequality (LMI) and its application in control, presented at Centre for Process Systems Engineering, Imperial College of Science, Technology & Medicine, London, England, Oct. 1995.

Others

Ph.D. dissertation, Control of Linear Parameter Varying Systems , UC Berkeley, CA, 1995. (ps)

 


* external link. Opens in a new browser window.
North Carolina State University • College of Engineering
Department of Mechanical & Aerospace Engineering
Campus Box 7910, Raleigh, NC 27695-7910 • Ph. 919-515-2365 • Fax 919-515-7968
Copyright © 2005 NC State University • cheryl_heeter@ncsu.edu
NC State University College of Engineering