Fen Wu

Professor

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  • Engineering Building III (EB3) 3254
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Dr. Wu’s long-term goal is to play an important role in the development of robust and nonlinear control theory. A major roadblock in the development of robust and nonlinear control theory is solvability (computation) and so his work focuses largely on solvability.

Dr. Wu teaches Nonlinear System Analysis and Control (MAE 522). This is a first-year graduate-level course that introduces students to the interesting nonlinear behavior and the corresponding control strategies, like Liapunov stability theory, feedback linearization, and sliding mode control. He also teaches Robust Control with Convex methods (MAE 721). This is an advanced course that goes beyond linear theory to provide modern tools that enhance robustness when the system is not completely known.

At the undergraduate level, Dr. Wu teaches Dynamics of Machines (MAE 315) and Principles of Automatic Control (MAE 435). In both of these courses, Dr. Wu’s major emphasis to the students is that we are dealing with systems and, as such, that they obey systematic methods.

Dr. Wu’s students are theoretically oriented, self-motivated, and work independently. He tends to give them a lot of freedom in their research direction. His students enjoy the subject, among the different reasons, because of its unique blend of mathematics and engineering.

Outside of work, Dr. Wu spends time with his family and enjoys travel.

Education

Ph.D. 1995

Mechanical Engineering

University of California at Berkeley

M.S. 1988

Automatic Control

Beijing University of Aeronautics and Astronautics

B.S. 1985

Automatic Control

Beijing University of Aeronautics and Astronautics

Research Description

Dr. Wu is interested in control theory, robust analysis and control, gain-scheduling control design and implementation, model approximation, structure and control interaction analysis, and the application of advanced control and optimization techniques to aerospace, mechanical and chemical engineering problems. Presently, he is working on fault detection algorithms that improve the safety of hypersonic vehicles (for NASA), and the development of computationally efficient algorithms for nonlinear systems that have polynomial nonlinearities. Within MAE he collaborates with Dr. Buckner and Dr. Yuan.

Publications

Almost output regulation of LFT systems via gain-scheduling control
Yuan, C. Z. and Duan, C. and Wu, F. (2018), International Journal of Control, 91(5), 1161-1170.
Cooperative output regulation of multi-agent systems with switched leader dynamics
Yuan, C. Z. and Wu, F. (2018), International Journal of Systems Science, 49(7), 1463-1477.
Stability analysis and controller design for a novel nonlinear system: Fuzzy parameter varying system
Zhang, H. Y. and Ban, X. J. and Wu, F. (2018), Journal of Intelligent & Fuzzy Systems, 34(6), 4387-4395.
Almost output regulation of switched linear dynamics with switched exosignals
Yuan, C. Z. and Wu, F. (2017), International Journal of Robust and Nonlinear Control, 27(16), 3197-3217.
Consensus for multi-agent systems with time-varying input delays
Yuan, C. Z. and Wu, F. (2017), International Journal of Systems Science, 48(14), 2956-2966.
Cooperative output regulation of multi-agent systems with switched leader dynamics via smooth switching
Yuan, C. Z. and Wu, F. and Duan, C. (2017), Proceedings of the ASME 10th Annual Dynamic Systems and Control Conference, 2017, vol 2, (), .
Dynamic output feedback control for continuous-time T-S fuzzy systems using fuzzy lyapunov functions
Liu, Y. and Wu, F. and Ban, X. J. (2017), IEEE Transactions on Fuzzy Systems, 25(5), 1155-1167.
Exact-memory and memoryless control of linear systems with time-varying input delay using dynamic IQCs
Yuan, C. Z. and Wu, F. (2017), Automatica, 77(), 246-253.
Gain-scheduling control of T-S fuzzy systems with actuator saturation
Liu, Y. and Ban, X. J. and Wu, F. and Lam, H. K. (2017), Journal of Intelligent & Fuzzy Systems, 32(3), 2579-2589.
New developments in multibody system dynamics and its applications 2015
Rui, X. T. and Zhang, C. Z. and Wang, S. M. and Wu, F. (2017), Advances in Mechanical Engineering, 9(3), .
Output feedback control for fuzzy systems subject to actuator saturation based on fuzzy Lyapunov functions
Ban, X. J. and Liu, Y. and Huang, X. L. and Wu, F. (2017), Proceedings of the ASME 9th Annual Dynamic Systems and Control Conference, 2016, Vol 1, (), .
Time-based switching control of genetic regulatory networks: toward sequential drug intake for cancer therapy
Oduola, W. O. and Li, X. F. and Duan, C. and Qian, L. J. and Wu, F. and Dougherty, E. R. (2017), Cancer Informatics, 16(), .
Tracking control of hybrid systems with state-triggered jumps and stochastic events and its application
Yang, T. and Wu, F. and Zhang, L. X. (2017), IET Control Theory and Applications, 11(7), 1024-1033.
Aggregate control of clustered networks with inter-cluster time delays
Boker, A. M. and Yuan, C. Z. and Wu, F. and Chakrabortty, A. (2016), Proceedings of the American Control Conference, (), 5340-5345.
Analysis and control of genetic regulatory systems with switched drug inputs
Oduola, W. and Li, X. F. and Duan, C. and Qian, L. J. and Wu, F. and Dougherty, E. R. (2016), 2016 3rd IEEE EMBS International Conference on Biomedical and Health Informatics, (), 533-536.
Dynamic IQC-based analysis and synthesis of networked control systems
Yuan, C. Z. and Wu, F. (2016), Proceedings of the American Control Conference, (), 5346-5351.
Dynamic IQC-based control of uncertain LFT systems with time-varying state delay
Yuan, C. Z. and Wu, F. (2016), IEEE Transactions on Cybernetics, 46(12), 3320-3329.
H-infinity state-feedback control of linear systems with time-varying input delays
Yuan, C. Z. and Wu, F. (2016), IEEE Conference on Decision and Control, (), 586-591.
Hybrid almost output regulation of linear impulsive systems with average dwell-time
Yuan, C. Z. and Wu, F. (2016), Nonlinear Analysis-Hybrid Systems, 20(), 82-94.
Hybrid switched gain-scheduling control for missile autopilot design
Yuan, C. Z. and Liu, Y. and Wu, F. and Duan, C. (2016), Journal of Guidance Control and Dynamics, 39(10), 2352-2363.
New results on switched linear systems with actuator saturation
Duan, C. and Wu, F. (2016), International Journal of Systems Science, 47(5), 1008-1020.
Output feedback control of linear fractional transformation systems subject to actuator saturation
Ban, X. J. and Wu, F. (2016), International Journal of Systems Science, 47(15), 3646-3655.
Robust H-2 and H-infinity switched feedforward control of uncertain LFT systems
Yuan, C. Z. and Wu, F. (2016), International Journal of Robust and Nonlinear Control, 26(9), 1841-1856.
Robust switching output-feedback control of time-varying polytopic uncertain systems
Yuan, C. Z. and Wu, F. (2016), International Journal of Control, 89(11), 2262-2276.
robust gain-scheduling output feedback control of state-delayed lft systems using dynamic IQCS
Yuan, C. Z. and Wu, F. and Duan, C. (2016), Proceedings of the ASME 8th Annual Dynamic Systems and Control Conference, 2015, vol 3, (), .
A gain-scheduling control approach for takagi-sugeno fuzzy systems based on linear parameter-varying control theory
Liu, Y. and Ban, X. J. and Wu, F. and Lam, H. K. (2016), Journal of Dynamic Systems, Measurement, and Control, 138(1), .
A new hybrid LFT control method for missile autopilot design
Yuan, C. Z. and Wu, F. (2016), Chinese Control Conference, (), 5852-5857.
A nonlinear gain-scheduling compensation approach using parameter-dependent Lyapunov functions
Wu, F. and Song, X. and Ren, Z. (2016), Journal of Dynamic Systems, Measurement, and Control, 138(1), .
An optimization-based approach for prosthesis dynamic modeling and parameter identification
Yang, T. and Wu, F. and Liu, M. and Huang, H. (2016), Proceedings of the ASME 8th Annual Dynamic Systems and Control Conference, 2015, vol 1, (), .
Almost output regulation of discrete-time switched linear systems
Yuan, C. Z. and Duan, C. and Wu, F. (2015), Proceedings of the American Control Conference, (), 4042-4047.
Asynchronous switching output feedback control of discrete-time switched linear systems
Yuan, C. Z. and Wu, F. (2015), International Journal of Control, 88(9), 1766-1774.
Gain scheduling output feedback control of linear plants with actuator saturation
Ban, X. J. and Wu, F. (2015), Journal of the Franklin Institute, 352(10), 4163-4187.
Hybrid control for switched linear systems with average dwell time
Yuan, C. Z. and Wu, F. (2015), IEEE Transactions on Automatic Control, 60(1), 240-245.
Preface
Rui, X. T. and Pfeiffer, F. G. and Zhang, C. Z. and Wang, S. M. and Wu, F. (2015), Advances in Mechanical Engineering, 7(9), .
Robust fault detection filter design for linear uncertain systems with unknown inputs
Liu, Y. and Wu, F. and Ban, X. J. (2015), Proceedings of the American Control Conference, (), 886-891.
Robust switching output feedback control of discrete-time linear polytopic uncertain systems
Yuan, C. Z. and Wu, F. and Duan, C. (2015), 2015 34th Chinese Control Conference (CCC), (), 2973-2978.
Switching control of linear systems subject to asymmetric actuator saturation
Yuan, C. Z. and Wu, F. (2015), International Journal of Control, 88(1), 204-215.
Analysis and control of switched linear systems via dwell-time min-switching
Duan, C. and Wu, F. (2014), Systems and Control Letters, 70(), 8-16.
Analysis and control of switched linear systems via modified Lyapunov-Metzler inequalities
Duan, C. and Wu, F. (2014), International Journal of Robust and Nonlinear Control, 24(2), 276-294.
Analysis and synthesis of linear hybrid systems with state-triggered jumps
Yuan, C. Z. and Wu, F. (2014), Nonlinear Analysis-Hybrid Systems, 14(), 47-60.
Control of polynomial nonlinear systems using higher degree Lyapunov functions
Yang, S. W. and Wu, F. (2014), Journal of Dynamic Systems, Measurement, and Control, 136(3), .
Dwell-time min-switching for discrete-time switched linear systems
Duan, C. and Wu, F. (2014), 2014 European Control Conference (ECC), (), 2540-2545.
Dynamic output feedback controller design for T-S fuzzy plants with actuator saturation using linear fractional transformation
Liu, Y. and Ban, X. J. and Wu, F. and Lam, H. K. (2014), IEEE International Fuzzy Systems Conference Proceedings, (), 2125-2132.
Output feedback reset control of general MIMO LTI systems
Yuan, C. Z. and Wu, F. (2014), 2014 European Control Conference (ECC), (), 2334-2339.
Feedback design for saturated polynomial nonlinear systems via higher order Lyapunov functions
Yang, S. W. and Wu, F. (2013), Proceedings of the ASME 5th Annual Dynamic Systems and Control Division Conference and JSME 11th Motion and Vibration Conference, DSCC 2012, vol 2, (), 645-652.
Gain-scheduling compensator synthesis for output regulation of nonlinear systems
Song, X. and Ren, Z. and Wu, F. (2013), Proceedings of the American Control Conference, (), 6078-6083.
New results on continuous-time switched linear systems with actuator saturation
Duan, C. and Wu, F. (2013), ASME 2013 Dynamic Systems and Control Conference, vol 2, (), .
Nonlinear gain-scheduling output-feedback control for polynomial nonlinear systems subject to actuator saturation
Wu, F. and Hays, S. (2013), International Journal of Control, 86(9), 1607-1619.
Robust control of switched linear systems via min of quadratics
Yuan, C. Z. and Wu, F. (2013), Proceedings of the ASME 2013 Dynamic Systems and Control Conference (DSCC2013), vol. 1, (), .
Robust switched filtering for time-varying polytopic uncertain systems
Duan, C. and Wu, F. (2013), Journal of Dynamic Systems, Measurement, and Control, 135(6), .
Switching fault-tolerant control of a flexible air-breathing hypersonic vehicle
Wu, F. and Cai, X. J. (2013), Proceedings of the Institution of Mechanical Engineers Part I-Journal of Systems and Control Engineering, 227(I1), 24-38.
Nonlinear robust H-infinity control with state-dependent scaling
Hays, S. and Wu, F. (2012), Proceedings of the ASME Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control (DSCC 2011), vol 1, (), 581-588.
Output feedback control for continuous-time switched linear systems subject to actuator saturation
Duan, C. and Wu, F. (2012), Proceedings of the ASME Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control (DSCC 2011), vol 1, (), 449-456.
Output-feedback control for switched linear systems subject to actuator saturation
Duan, C. and Wu, F. (2012), International Journal of Control, 85(10), 1532-1545.
Adaptive control design for uncertain polynomial nonlinear systems with parametric uncertainties
Zheng, Q. and Wu, F. (2011), International Journal of Adaptive Control and Signal Processing, 25(6), 502-518.
Generalized nonlinear H(infinity) synthesis condition with its numerically efficient solution
Zheng, Q. and Wu, F. (2011), International Journal of Robust and Nonlinear Control, 21(18), 2079-2100.
Multiobjective fault detection and isolation for flexible air-breathing hypersonic vehicle
Cai, X. J. and Wu, F. (2011), Journal of Systems Engineering and Electronics, 22(1), 52-62.
Robust fault detection and isolation for parameter-dependent LFT systems
Cai, X. J. and Wu, F. (2010), International Journal of Robust and Nonlinear Control, 20(7), 764-776.
Robust parameter-dependent fault-tolerant control for actuator and sensor faults
Cai, X. J. and Wu, F. (2010), International Journal of Control, 83(7), 1475-1484.
Disturbance attenuation by output feedback for linear systems subject to actuator saturation
Wu, F. and Zheng, Q. and Lin, Z. L. (2009), International Journal of Robust and Nonlinear Control, 19(2), 168-184.
Lyapunov redesign of adaptive controllers for polynomial nonlinear systems
Zheng, Q. and Wu, F. (2009), Proceedings of the American Control Conference, (), 5144-5149.
Nonlinear H-infinity control designs with axisymmetric spacecraft control
Zheng, Q. and Wu, F. (2009), Journal of Guidance Control and Dynamics, 32(3), 850-859.
Online switching control of LFT parameter-dependent systems
Dong, K. and Wu, F. (2009), Journal of Dynamic Systems, Measurement, and Control, 131(2), .
Regional stabilisation of polynomial non-linear systems using rational Lyapunov functions
Zheng, Q. and Wu, F. (2009), International Journal of Control, 82(9), 1605-1615.
A Robust fault tolerant control approach for LTI systems with actuator and sensor faults
Cai, X. J. and Wu, F. (2009), CCDC 2009: 21st Chinese Control and Decision Conference, vols 1-6, Proceedings, (), 890-895.
Almost output regulation for parameter-dependent linear fractional transformation systems
Dong, K. and Wu, F. (2008), IET Control Theory and Applications, 2(3), 200-209.
Output feedback control of saturated discrete-time linear systems using parameter-dependent Lyapunov functions
Zheng, Q. and Wu, F. (2008), Systems and Control Letters, 57(11), 896-903.
Output feedback stabilization of linear systems with actuator saturation
Wu, F. and Lin, Z. L. and Zheng, Q. (2007), IEEE Transactions on Automatic Control, 52(1), 122-128.
Robust and gain-scheduling control of LFT systems through duality and conjugate Lyapunov functions
Dong, K. and Wu, F. (2007), International Journal of Control, 80(4), 555-568.
Robust receding horizon control for constrained linear fractional transformation parameter-dependent systems
Wu, F. and Chen, Y. (2007), IET Control Theory and Applications, 1(5), 1423-1430.
Gain-scheduling control of LFT systems using parameter-dependent Lyapunov functions
Wu, F. and Dong, K. (2006), Automatica, 42(1), 39-50.
Probabilistic robust linear parameter-varying control of an F-16 aircraft
Lu, B. and Wu, F. (2006), Journal of Guidance Control and Dynamics, 29(6), 1454-1460.
Distributed parameter-dependent modeling and control of flexible structures
Wu, F. and Yildizoglu, S. E. (2005), Journal of Dynamic Systems, Measurement, and Control, 127(2), 230-239.
Linear parameter-varying antiwindup compensation for enhanced flight control performance
Lu, B. and Wu, F. and Kim, S. W. (2005), Journal of Guidance Control and Dynamics, 28(3), 494-505.
SOS-based solution approach to polynomial LPV system analysis and synthesis problems
Wu, F. and Prajna, S. (2005), International Journal of Control, 78(8), 600-611.
Anti-windup control design for exponentially unstable LTI systems with actuator saturation
Wu, F. and Lu, B. (2004), Systems and Control Letters, 52(04-Mar), 305-322.
On convexified robust control synthesis
Wu, F. and Lu, B. (2004), Automatica, 40(6), 1003-1010.
Computationally efficient algorithm for frequency-weighted optimal H-infinity model reduction
Wu, F. and Jaramillo, J. J. (2003), Asian Journal of Control, 5(3), 341-349.
Distributed control for interconnected linear parameter dependent systems
Wu, F. (2003), IEE Proceedings, Control Theory and Applications, 150(5), 518-527.
H-infinity and L-2-to-L-infinity gain control of linear parameter-varying systems with parameter-varying delays
Tan, K. and Grigoriadis, K. M. and Wu, F. (2003), IEE Proceedings, Control Theory and Applications, 150(5), 509-517.
Robust quadratic performance for time-delayed uncertain linear systems
Wu, F. (2003), International Journal of Robust and Nonlinear Control, 13(2), 153-172.
Output-feedback control of LPV sampled-data systems
Tan, K. and Grigoriadis, K. M. and Wu, F. (2002), International Journal of Control, 75(4), 252-264.
LMI-based robust model predictive control and its application to an industrial CSTR problem
Wu, F. (2001), Journal of Process Control, 11(6), 649-659.
LPV Systems with parameter-varying time delays: analysis and control
Wu, F. and Grigoriadis, K. M. (2001), Automatica, 37(2), 221-229.
A generalized LPV system analysis and control synthesis framework
Wu, F. (2001), International Journal of Control, 74(7), 745-759.
Anti-windup controller design using linear parameter-varying control methods
Wu, F. and Grigoriadis, K. M. and Packard, A. (2000), International Journal of Control, 73(12), 1104-1114.

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Grants

Advanced Switching Control Techniques For Switched Systems Subject to Physical Constraints
National Science Foundation (NSF)(6/01/12 - 8/31/16)
Developing High Performance, Computationally Efficient Nonlinear Control Techniques For Polynomial Nonlinear Systems
National Science Foundation (NSF)(6/01/08 - 5/31/12)
Reconfigurable Robust Gain-Scheduled Control for Air-Breathing Hypersonic Vehicles
National Aeronautics & Space Administration (NASA)(1/05/07 - 12/31/11)
Developing Nonlinear Optimal and Robust Control Techniques for Space Exploration
NCSU NC Space Grant Consortium(7/01/06 - 6/30/07)