Xiaochang Alex Wang

Education

Editorial Board

Associate Editor of the IEEE Control Systems Society Conference Editorial Board.

Positions Held

Publications

  1. X. Wang, ``On Static Output Feedback Stabilization of Systems with Stable Generalized Zero Dynamics,'' accepted by IEEE Trans. Auto. Control}.
  2. M. Kim, J. Rosenthal and X. Wang, ``Pole Placement and Matrix Extension Problems: A Common Point of View,'' accepted by SIAM J. Control Optim.
  3. 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.
  4. 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.
  5. B. Ghosh and X. Wang, ``On Minimal Degree Simultaneous Pole Assignment Problems,'' Linear Algebra and its Applications, Vol. 351/352, 2002, pp. 411-433.
  6. 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.
  7. 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.
  8. J. Rosenthal and X. Wang, ``Eigenvalue completions by affine varieties,'' Proceedings of the American Mathematical Society, Vol.128, 2000.
  9. X. Wang and W. Dayawansa, ``On Global Lyapunov Functions of Nonlinear Autonomous Systems,'' Proc. 38th IEEE CDC, Phoenix, 1999, pp. 1635-1639.
  10. 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.
  11. X. Wang, ``On the Generalized Zero Dynamics,'' Proc. 37th IEEE CDC, Tampa, 1998, pp. 4109-4111.
  12. 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.
  13. B. Ghosh and X. Wang, ``Simultaneous Pole Assignment of Linear MIMO Dynamical Systems,'' Proc. 36th IEEE CDC, San Diego, 1997, pp. 4274-4279.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. 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
  22. 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.
  23. 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.
  24. M.S. Ravi, J. Rosenthal and X. Wang, ``On Generic Stabilizability and Pole Assignability,'' System and Control Letters, Vol. 23, 1994, pp. 79--84.
  25. 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.
  26. 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.
  27. X. Wang, ``Decentralized Pole Assignment and Product Grassmannians,'' SIAM Journal on Control and Optimization, Vol. 32, No. 3, 1994, pp. 855-875.
  28. 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.
  29. 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.
  30. 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.
  31. 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.
  32. 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.
  33. 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.
  34. 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.
  35. 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.
  36. 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.
  37. X. Wang, ``Pole Placement by Static Output Feedback,'' Journal of Mathematical Systems, Estimation, and Control, Vol. 2, No. 2, 1992, pp. 205-218.
  38. 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.
  39. 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.
  40. 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.
  41. X. Wang, ``On Output Feedback via Grassmannians,'' SIAM Journal on Control and Optimization., Vol. 29, No. 4, 1991, pp. 926-935.
  42. 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.
  43. 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.
  44. X. Wang, ``Output Feedback Pole Placement and R-Degeneracy of Linear Systems,'' Proc. 29th IEEE CDC, Honolulu, 1990, pp.1873-1874.
  45. X. Wang, ``Geometric Inverse Eigenvalue Problems,'' in Computation and Control, K. Bowers and J. lund, eds., Birkhauser, Boston, 1989, pp.375-383.
  46. 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

  1. Applications of Algebraic Geometry on System Theory, National Science Foundation DMS-9500594, July, 1995 - June, 1997, $40,000.
  2. Minimal Order Dynamic Pole Assignment Problem, National Science Foundation DMS-9224541, July, 1993 - June, 1995, $31,925.
  3. 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.
  4. Minimal Order Dynamic Compensatoins of Feedback Systems, Research Enhancement Fund, College of Arts and Sciences, Texas Tech University, September, 1991 - August, 1992, $2240.