Publications of Guoxiang Gu by area

Research supported by

NSF Research Initiation Award ECS-9110636.
AFOSR DEPSCoR Award F49620-94-1-0415.
AFOSR ASSERT Award F49620-95-1-0354.
AFOSR Research Grant F49620-95-C-0063.
ARO DEPSCoR Award DAAH04-96-1-0193.
AFOSR Research Grant F49620-97-1-0064.
AFOSR DEPSCoR Award F49620-99-1-0179.

System Identification and Model Validation in H-infinity
Bifurcation Stabilization and Compressor Control
Robust, Optimal, and Nonlinear Control
Multirate Filter Design
Stability Testing for 2-D and Time-delay Systems
Approximation of Infinite Dimensional Systems
2-D Systems and Signal Processing

Copyrights to the many of the following papers are held by the publishers. The attached PostScript files are preprints. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.

System Identification in H-infinity

J. Chen and G. Gu, ``Worst-case asymptotic properties of H-infinity identification,'' IEEE Trans. Circuits and Syst., vol. 49, pp. 437-446, 2002.
G. Gu and J. Chen, ``A nearly interpolatory algorithm for H-infinity identification with mixed time and frequency response data,'' IEEE Trans. Circuits and Syst., vol. 46, pp. 464-469, Mar. 2001.
Jie Chen and Guoxiang Gu, Control-Oriented System Identification -- An H infinity Approach, published by John Wiley & Sons, Inc., 2000. Lecture notes and Matlab programs for the book available.
G. Gu, ``Modeling of normalized coprime factors with nu-metric uncertainty,'' IEEE Trans. Automat. Contr., vol. 44, 1498-1511, 1999.
D. Xu, Z. Ren, G. Gu, and J. Chen, ``LFT uncertain model validation with time- and frequency-domain measurements,'' IEEE Trans. Automat. Contr., vol. 44, pp. 1435-1441, July 1999.
P.P. Khargonekar, G. Gu, and J. Friedman, ``Identification in H-infinity: Theory and Applications,'' in Identification, Adaptation, Learning, S. Bittanti et al. Eds., NATO ASI Series F: Computer and Systems Science, vol. 153, pp. 266-288, Springer-Verlag, 1996.
G. Gu and P.P. Khargonekar, ``Identification in frequency domain,'' in Lecture Notes in Control and Information Sciences, vol. 202, Francis and A. R. Tannenbaum Eds., pp. 99-113, Springer-Verlag, London, UK, 1995.
G. Gu, ``Identification in H-infinity using time-domain measurement data,'' in Modeling Uncertainties in Control Systems, R. Smith and M. Dahleh, Eds., Springer-Verlag, 1994.
J. Chen, G. Gu and C.N. Nett, ``Worst case identification of continuous-time systems via interpolation,'' Automatica, vol. 30, pp. 1825-1837, Dec. 1994.
G. Gu, ``Suboptimal algorithms for worst case identification and model validation,'' IEEE Trans. Automat. Contr., vol. 39, pp. 1657-1661, Aug. 1994.
H. Akcay, G. Gu and P.P. Khargonekar, ``Worst case identification with nonuniformly spaced frequency response measurements,'' Int. J. on Robust and Nonlinear Contr., vol. 4, pp. 613-629, July 1994.
H. Akcay, G. Gu and P.P. Khargonekar, ``System identification for continuous-time systems,'' IEEE Trans. Automat. Contr., vol. vol. 38, pp. 289-294, Feb. 1993.
G. Gu, P.P. Khargonekar and Y. Li, ``Robust convergence for system identification in H-infinity,'' Syst. and Contr. Lett., vol. 18, pp. 253-263, April 1992.
G. Gu and P.P. Khargonekar, ``A class of algorithms for system identification in H-infinity,'' Automatica, vol. 28, pp. 299-312, March 1992.

Bifurcation Stabilization and Compressor Control

X. Chen, A. Tahmasebi, and G. Gu, ``Local robustness of stabilization with applications to jet engine control,'' in Bifurcation Control: Theory and Applications, G. Chen {\it et al} Eds., pp. 275-300, Springer-Verlag, 2003.
C. Belta, G. Gu, A. Sparks, and S. Banda, ``Rotating stall control for axial flow compressors,'' Automatica, pp. 921-931, 2001.
X. Chen, A.G. Sparks, K. Zhou, and G. Gu, ``Local robustness of stationary bifurcation control,'' Latin American Applied Research, pp. 163-170, 2001.
G. Gu and A. Sparks, ``Bifurcation stabilization with applications in jet engine control,'' in Controlling Bifurcations and Chaos in Engineering Systems, G. Chen Eds., pp. 347-368, CRC Press, 1999.
G. Gu, S. Banda, and A. Sparks, ``An overview of rotating stall and surge control for axial flow compressors,'' IEEE Trans. Contr. Syst. Tech., vol. 7, pp. 639-647, 1999.
G. Gu, A. Sparks and C. Belta, ``Stability analysis for rotating stall dynamics in axial flow compressors,'' Circuits, Systems, and Signal Processing, vol. 18, pp. 331-350, 1999.
G. Gu, X. Chen, A. Sparks, and S. Banda, ``Bifurcation stabilization with local output feedback,'' SIAM J. Contr. Optimiz., vol. 37, pp. 934-956, March 1999.
W. Kang, G. Gu, A. Sparks, and S. Banda, ``Bifurcation test functions and surge control for axial flow compressors,'' Automatica, vol. 35, pp. 229-239, 1999.
G. Gu, A. Sparks, and S. Banda, ``Bifurcation based nonlinear feedback control for rotating stall in axial flow compressors,'' Int. J. Contr., vol. 6, pp. 1241-1257, Dec. 1997.

Robust and Optimal Control

G. Gu, X.-R. Cao, and H. Badr, ``Generalized LQR control and Kalman filtering with relations to computations of inner-outer and spectral factorizations,'' IEEE Trans. Automat. Contr., vol. 51, pp. 595-605, April 2006.
G. Gu, ``All optimal Hankel-norm approximations and their L-infinity error bounds in discrete-time,'' Int. J. Contr., vol. 78, pp. 408-423, April 2005.
G. Gu, ``Inner-outer factorization for strictly proper transfer matrices,'' IEEE Trans. Automat. Contr., vol. 47, pp. 1915-1919, 2002.
G. Gu, J. Chen, and E.B. Lee, ``Parametric H-infinity loopshaping and weighted mixed sensitivity minimization,'' IEEE Trans. Automat. Contr., vol. 44, pp. 846-851, Aug. 1999.
G. Gu and L. Qiu, ``Connection of multiplicative or relative perturbation in coprime factors and gap metric uncertainty,'' Automatica, pp. 603-607, May 1998.
J. Chen, G. Gu, C.N. Nett and D. Xiong, ``A canonical structure for constrained optimal control problems,'' Int. Journal on Robust and Nonlinear Control, vol. 6, pp. 727-741, June 1996.
G. Gu, ``Model reduction with relative/multiplicative error bounds and relations to controller reduction,'' IEEE Trans. Automat. Contr., vol. AC-40, pp. 1478-1485, Aug.
G. Gu and P. Misra, ``Disturbance attenuation and H-infinity optimization using output feedback,'' AIAA Journal on Guidance, Control and Dynamics, vol. 17, pp. 145-152, Jan.-Feb. 1994.
K. Zhou and G. Gu, ``Robust stability of multivariable systems with both real parametric and norm bounded uncertainties,'' IEEE Trans. Automat. Contr., vol. 37, 1533-1537, Oct. 1992.
G. Gu, ``Stabilizability condition of uncertain systems via output feedback control,'' IEEE Trans. Automat. Contr., vol. AC-35, pp. 915-917, Aug. 1990.
G. Gu, ``On the existence of linear optimal control with output feedback,'' SIAM J. Contr. and Optimiz., vol. 28, pp. 711-719, May 1990.
F.N. Bailey, D. Panzer and G. Gu, ``Two algorithms for frequency domain design of robust control systems,'' Int. J. Contr., vol. 48, no. 5, pp. 1787-1806, Nov. 1988.

Multirate DSP and Wireless Communications

L. Li and G. Gu, ``Design of optimal zero-forcing precoder for MIMO channels via optimal full information control,'' IEEE Trans. Signal Processing, vol. 53, pp. 3238-3246, Aug. 2005.
G. Gu and E. Badran, ``Optimal design for channel equalization via filterbank approach'', IEEE Trans. Signal Processing, vol. 52, pp. 536-545, Feb. 2004.
G. Gu, and L. Li, ``Worst-case design for optimal channel equalization in filterbank transceivers,'' IEEE Trans. Signal Processing, vol. 51, pp. 2424-2435, Sept. 2003.
J. Huang, G. Gu, and B.A. Shenoi, ``Design of multichannel QMF banks via frequency domain optimizations,'' IEEE Trans. Circuits and Syst., Part II, vol. 46, pp. 599-607, May 1999.
J. Huang and G. Gu, ``A direct approach to the design of QMF banks via frequency domain optimizations,'' IEEE Trans. Signal Processing, vol. 46, pp. 2131-2138, Aug. 1998.
G. Gu and J. Huang, ``Convergence results on the design of QMF banks,'' IEEE Trans. Signal Processing, vol. 46, pp. 758-761, March 1998.

Approximation of Infinite Dimensional Systems

G. Gu, P.P. Khargonekar, E.B. Lee and P. Misra, ``Finite-dimensional approximations of unstable infinite-dimensional systems,'' SIAM J. Contr. and Optimiz., vol.30, pp. 704-716, May 1992.
N.E. Wu and G. Gu, ``Discrete Fourier transform and H-infinity approximation,'' IEEE Trans. Automat. Contr., vol. AC-35, pp. 1044-1046, Sept. 1990.
G. Gu, P.P. Khargonekar and E. B. Lee, ``Approximation of infinite dimensional systems,'' IEEE Trans. Automat. Contr., vol. AC-34, pp. 610-618, June 1989.

2-D Systems and Signal Processing

J.L. Aravena and G. Gu, ``Weighted least mean square design of 2-D FIR digital filters: the general case,'' IEEE Trans. Signal Processing, vol. 44, pp. 2568-2578, Oct. 1996.
G. Gu and J.L. Aravena, ``Weighted least mean square design of 2-D FIR filters,'' IEEE Trans. Signal Processing, vol. 42, pp. 3178-3187, Nov. 1994.
K. Zhou, J.L. Aravena, G. Gu, and D. Xiong, ``Two-dimensional system model reduction by quasi-balanced truncation and singular perturbation,'' IEEE Trans. Circuit and Syst., vol. 41, pp. 593-602, Sept. 1994.
G. Gu, J.L. Aravena and K. Zhou, ``On minimal realization of 2-D systems,'' IEEE Trans. Circuits and Syst., vol. CAS-38, pp. 1228-1233, Oct. 1991.
G. Gu, P. Misra and B.A. Shenoi, ``A methodology for the synthesis of two-dimensional analog filters with linear phase,'' J. Circuits, Systems and Computers, vol. 1, pp. 75-92, March 1991.
G. Gu and B.A. Shenoi, ``A novel approach to the synthesis of recursive digital filters with linear phase,'' IEEE Trans. Circuits and Syst., vol. CAS-38, pp. 602-612, June 1991.
G. Gu, B.A. Shenoi and C. Zhang, ``Synthesis of 2-D linear phase digital filters,'' IEEE Trans. Circuits and Syst., vol. CAS-37, pp. 1499-1508, Dec. 1990.
J. Chen, G. Gu and C.N. Nett, ``A new method for computing delay margins for stability of linear delay systems,'' Syst. and Contr. Lett., vol. 26, pp. 107-117, Jan. 1995.
G. Gu and E.B. Lee, ``A numerical algorithm for stability testing of 2-D recursive digital filters,'' IEEE Trans. Circuits and Syst., vol. CAS-37, pp. 135-138, Jan. 1990.
G. Gu and E.B. Lee, ``Stability testing of time delay systems,'' Automatica, vol. 25, pp. 777-780, Sept. 1989.

Guoxiang Gu
F.Hugh Coughlin/CELCO Distinguished Professor
Department of Electrical and Computer Engineering
Louisiana State University
Baton Rouge, LA 70803-5901

Phone: (225) 578-5534
Office: (225) 578-5241
Fax: (225) 578-5200
E-mail: ggu@ee.lsu.edu