Xiaochang Alex Wang
Education
Editorial Board
Associate Editor of the IEEE
Control Systems Society Conference
Editorial Board.
Positions Held
- Professor, Department of Mathematics and Statistics, Texas Tech University, 2004-Present.
- Associate Professor, Department of Mathematics and Statistics, Texas Tech University, 1996-2004.
- Graduate Advisor, Department of Mathematics and Statistics, Texas Tech University, 2003-2010.
- Hiring Committee Chair, Department of Mathematics and Statistics, Texas Tech University, 1998-2003.
- Assistant Professor, Department of Mathematics and Statistics, Texas Tech University, 1991-1996.
- Visiting Assistant Professor, Department of Mathematics and Statistics, Texas Tech University,
1989-1991.
Publications
- X. Wang, ``On Static Output Feedback Stabilization of Systems
with Stable Generalized Zero Dynamics,''
accepted by IEEE Trans. Auto. Control}.
- M. Kim, J. Rosenthal and X. Wang,
``Pole Placement and Matrix Extension Problems: A Common Point of View,''
accepted by SIAM J. Control Optim.
- H. Henkel and X. Wang, ``On the Rational Cubic Curve Cryptosystems,''
Proceedings of the Fifteenth International Symposium on Mathematical
Theory of Networks and Systems, D.S. Gilliam and J. Rosenthal, eds., 2002.
- X. Wang, ``On Minimal Order Decentralized Output Feedback P
ole Assignment Problems,''
Proceedings of the Fifteenth International Symposium on Mathematical
Theory of Networks and Systems, D.S. Gilliam and J. Rosenthal, eds., 2002.
- B. Ghosh and X. Wang,
``On Minimal Degree Simultaneous Pole Assignment Problems,''
Linear Algebra and its Applications, Vol. 351/352, 2002, pp. 411-433.
- J. Rosenthal and X. Wang,
``The Multiplicative Inverse
Eigenvalue Problem over an Algebraically Closed Field,''
SIAM J. Matrix Analysis and Applications, Vol. 23, No.2, 2001, pp. 517--523.
- B. Ghosh and X. Wang,
``Sufficient Conditions for Generic Simultaneous Pole
Assignment and Stabilization of Linear MIMO Dynamical Systems,''
IEEE Trans. Auto. Control, Vol. 45, 2000, pp. 734--738.
- J. Rosenthal and X. Wang,
``Eigenvalue completions by affine varieties,''
Proceedings of the American Mathematical Society, Vol.128, 2000.
- X. Wang and W. Dayawansa,
``On Global Lyapunov Functions of Nonlinear Autonomous Systems,''
Proc. 38th IEEE CDC, Phoenix, 1999, pp. 1635-1639.
- J. Leventides, J. Rosenthal, and X. Wang,
``The Pole Placement Problem via PI Feedback Controllers,''
International Journal of Control, Vol. 72, No 12, 1999, pp. 1065-1077.
- X. Wang,
``On the Generalized Zero Dynamics,''
Proc. 37th IEEE CDC, Tampa, 1998, pp. 4109-4111.
- M. Ravi, J. Rosenthal, and X. Wang,
``Degree of the Generalized Pl\"{u}cker Embedding of A
Quot Scheme and Quantum Cohomology,''
Mathematische Annalen, Vol 311, 1998, pp. 11-26.
- B. Ghosh and X. Wang,
``Simultaneous Pole Assignment of Linear MIMO Dynamical Systems,''
Proc. 36th IEEE CDC, San Diego, 1997, pp. 4274-4279.
- J. Rosenthal and X. Wang,
``Inverse Eigenvalue Problems for Multivatiable Linear Systems,''
in Systems and Control in the Twenty-First Century,
C. I. Byrnes, B. N. Datta, D. Gilliam, and C. F. Martin, eds,
Birkäuser, Boston-Basel-Berlin, 1997, pp. 289-311.
- W. Helton, J. Rosenthal and X. Wang, ``Matrix Extensions and
Eigenvalue Completions, the Generic Case,''
Transactions of the American Mathematical Society, Vol. 349,
No. 8, 1997, pp. 3401-3408.
- J. Rosenthal and X. Wang, ``Output Feedback Pole Placement with
Dynamic Compensators,''
IEEE Transactions on Automatic Control
,
Vol. 41, No. 6, 1996, pp. 830-843.
- X. Wang, ``Grassmannian, Central Projection and Output Feedback
Pole Assignment of Linear Systems,''
IEEE Transactions on Automatic Control
,
Vol. 41, No. 6, 1996, pp. 786-794.
- M.S. Ravi, J. Rosenthal and X. Wang,
``Dynamic Pole Assignment and Schubert Calculus,''
SIAM Journal on Control and Optimization,
Vol. 34, No. 3, 1996, pp. 813-832.
- J. Rosenthal and X. Wang, ``Eigenvalue Assignment by Dynamic Output
Feedback: A New Sufficiency Criterion in the Real Case,''
Proceedings of the 34th IEEE Conference on Decision and Control,
New Orlean, 1995, pp. 2710-2715.
- J. Rosenthal, J.M. Schumacher, X. Wang, and J.C. Willems, ``Generic
Eigenvalue Assignment for Generalized Linear First Order Systems,''
Proceedings of the 34th IEEE Conference on Decision and
Control, New Orlean, 1995, pp. 492-497.
- M.S. Ravi, J. Rosenthal, and X. Wang, ``Dynamic Pole Assignment for
Systems in Generalized First Order Form: A Report on Results Derived by
Algebro Geometric Techniques,''
Proceedings of the 34th IEEE Conference on Decision and Control,
New Orlean, 1995, pp. 1900-1904
- M.S. Ravi, J. Rosenthal and X. Wang,
``On Decentralized Dynamic Pole Placement and Feedback
Stabilization,'' IEEE Transactions on Automatic Control,
Vol. 40, No. 9, 1995, pp. 1603-1614.
- W. Dayawansa, B. Ghosh, C. Martin, and X. Wang,
``A Necessary and Sufficien Condition for the Perspective
Observability Problem,''
System and Control Letters, Vol. 25, 1995, pp. 159--166.
- M.S. Ravi, J. Rosenthal and X. Wang,
``On Generic Stabilizability and Pole Assignability,''
System and Control Letters, Vol. 23, 1994, pp. 79--84.
- J. Rosenthal, M. Sain, and X. Wang,
``Topological Considerations for Autoregressive Systems with
Fixed Kronecker Indices,''
Circuits, Systems, and Signal Processing, Vol. 13, No. 2-3, 1994,
pp. 295-308.
- X. Wang and J. Rosenthal, ``A Cell Structure for the Set of
Autoregressive Systems,''
Linear Algebra and Its Applications, Vol. 203/204, 1994,
pp. 1203-1226.
- X. Wang, ``Decentralized Pole Assignment and Product
Grassmannians,'' SIAM Journal on Control and Optimization,
Vol. 32, No. 3, 1994, pp. 855-875.
- X. Wang, M.S. Ravi and J. Rosenthal,
``Recent Applications of Algebraic Geometry in
Linear System Theory,'' Proceedings of the 5th SIAM Conference on
Applied Linear Algebra, Snowbird, 1994, pp. 206-210.
- M. Ravi, J. Rosenthal and X. Wang, ``Algebraic and Combinatorial
Aspects of the Dynamic Pole Assignment Problem,''
Systems and Networks: Mathematical Theory and Applications
(U. Helmke, R. Mennicken and J. Saurer, eds.),
Akademie Verlag, Berlin, 1994, pp. 547-550.
- C.I. Byrnes and X. Wang, ``Additive Inverse Eigenvalue Problems
for Lie Perturbation,'' SIAM Journal on Matrix Analysis and
Applications, Vol. 14, No 1, 1993, pp. 113-117.
- X. Wang, ``On the Number of Solutions for Dynamic Pole
Assignment Problem,'' Proceedings of the 32nd IEEE Conference on
Decision and Control, San Antonio, 1993, pp. 2411-2412.
- M.S. Ravi, J. Rosenthal and X. Wang,
``Robustness of Autoregressive Systems,''
Proceedings of the 32nd IEEE Conference on Decision and Control,
San Antonio, 1993, pp. 2878-2879.
- M.S. Ravi, J. Rosenthal and X. Wang,
``On Decentralized Dynamic Compensation,''
Proceedings of the 32nd IEEE Conference on Decision and Control,
San Antonio, 1993, pp. 357-358.
- M. Ravi, J. Rosenthal and X. Wang, ``On Subsets of Autoregressive
Systems and Stabilization Conditions,''
Proceedings of the of European Control Conference, Groningen, The
Netherlands,
1993, pp. 1879-1882.
- X. Wang and J. Rosenthal, ``Hasse Diagram and Dynamic Feedback of
Linear System,'' Computation and Control III
(K. Bowers and J. Lund, eds.),
Birkhauser, Boston, 1993, pp. 391-398.
- J. Rosenthal and X. Wang, ``What is the Distance between Two
Autoregressive Systems?'' Computation and Control III
(K. Bowers and J. Lund, eds.),
Birkhauser, Boston, 1993, pp. 333-340.
- X. Wang, ``Pole Placement by Static Output Feedback,''
Journal of Mathematical Systems, Estimation, and Control,
Vol. 2, No. 2, 1992, pp. 205-218.
- X. Wang, C.F. Martin, D. Gilliam and C.I. Byrnes,
``On Decentralized Feedback Pole Placement of Linear Systems,''
International Journal of Control, Vol. 55, No. 2, 1992, pp. 511-518.
- X. Wang and J. Rosenthal,
``Pole Placement with Small Order Dynamic Compensators,''
Proceedings of the 31st IEEE Conference on Decision and Control,
Tucson, 1992, pp. 3098-3099.
- M. Ravi, J. Rosenthal and X. Wang, ``On Homogeneous Autoregressive
Systems,'' Proceedings of the of Symposium on Implicit and
Nonlinear Systems, Ft. Worth, 1992, pp. 229-235.
- X. Wang, ``On Output Feedback via Grassmannians,''
SIAM Journal on Control and Optimization., Vol. 29, No. 4, 1991,
pp. 926-935.
- C. Martin, X. Wang and M. Stampe,
Discrete Observability and Numerical Quadrature.
IEEE Transactions on Automatic Control, Vol. 36, No. 11,
1991, pp. 1337-1340.
- X. Wang, ``On Compactifications of Decentralized Output
Feedback Spaces,'' Computation and Control II,
(K. Bowers and J. Lund, eds.),
Birkhauser, Boston, 1991, pp. 351-358.
- X. Wang, ``Output Feedback Pole Placement and R-Degeneracy of
Linear Systems,'' Proc. 29th IEEE CDC, Honolulu, 1990, pp.1873-1874.
- X. Wang, ``Geometric Inverse Eigenvalue Problems,''
in Computation and Control, K. Bowers and J. lund, eds.,
Birkhauser, Boston, 1989, pp.375-383.
- X. Wang, ``A New Edge Diffraction Coefficient in GTD,''
Proceedings of the International Symposium
on Antennas and Electromagnetic Compatibility, Beijing, 1985, pp.258-262.
Funded research
- Applications of Algebraic Geometry on System Theory,
National Science Foundation DMS-9500594,
July, 1995 - June, 1997, $40,000.
- Minimal Order Dynamic Pole Assignment Problem,
National Science Foundation DMS-9224541,
July, 1993 - June, 1995, $31,925.
- Topology of Autoregressive Systems and Degree of the
Variety of Rosenthal,
Research Enhancement Fund, College of Arts and Sciences, Texas Tech
University, September, 1992 - August, 1993, $2500.
- Minimal Order Dynamic Compensatoins of Feedback Systems,
Research Enhancement Fund, College of Arts and Sciences, Texas Tech
University, September, 1991 - August, 1992, $2240.