Selected Research papers from 1996 to 2009

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Robust and minimum-norm partial eigenvalue assignment in vibrating systems: A New Optimization Approach (with Z-J. Bai and J. Wang), To Appear in Mechanical Systems and Signal Processing.

A symmetry preserving alternate projection method for finite-element model updating (with Joali Moreno and Marcos Raydan), the special issuse on "Inverse Problems" of the journal Mechanical Systems and Signal Processing, 2009, 1784-1791.

LMI based stability and stabilization of second-order linear repentitive process (with P. Dabkowski, K. Galkowski, and E. Rogers), Asian J. Control, 2009, vol. 12, no. 2, 1-12.

Spillover phenomenon in quadratic model updating, (with M.Chu, W.W. Lin, and S.Xu),American Institute of Aeronautics and Astronautics (AIAA) Journal, 2008, vol. 46, 420-429.

A direct method for model updating with incomplete measured data and without spurious modes (with J. Carvalho, A. Gupta, and M. Lagadapati), Mechanical Systems and Signal Processing, 2007, vol. 21, 2715-2731.

Quadratic Inverse Eigenvalue Problems, Active Vibration Control and Model Updating To Appear in Journal of Applied and Computational Mathematics .

A New Algorithm for Generalized Sylvester-Observer Equation and its Application to State and Velocity Estimations in Vibrating Systems To Appear in Numer. Lin. Alg. Appl.

Model Updating and Simulation of Lyapunov Exponents.

An Optimization Approach for Minimum Norm and Robust Partial Quadratic Eigenvalue Assignment Problems for Vibrating Structures. (with S. Brahma)Journal of Sound and Vibration, 2008, 471-489.

A Sylvester-Equation Based Parametric Approach for Minimum Norm and Robust Partial Quadratic Eigenvalue Assignment Problems.

An optimiztion technique for model updating with measured data satisfying quadratic orthogonality constraint. (with S.Deng, V. Sokolov and D.R. Sarkissian)Special Issue on "Inverse Problems" of the Journal Mechanical Systems and Signal Processing, 2009, 1759-1772.

A Computational Method for Feedback Control in Distributed Parameter Systems. (with D. Sarkissian), Proceedings of the 8th IEEE Int. Conference on Methods and Models in Robotics and Automation, pp 139-144, 2002

Krylov Subspace Methods for Large-Scale Matrix Problems in Control. To appear in the Special Issue on "Structural Dynamical Systems in Linear Algebra : Computational Issues " of the Journal Future Generation Computer Systems.

Partial Eigenvalue Assignment in Linear Systems: Existence, Uniqueness and Numerical Solution. (with D. Sarkissian). Proc. MTNS'2002 , Notre Dame, Aug 2002.

Computational Methods for Feedback Control in Damped Gyroscopic Second-order Systems. (with D. Sarkissian). Proc. IEEE International Conference on Decision and Control , Las Vegas, NV, Dec 2002.

An Algorithm for Generalized Sylvester-observer Equation in State Estimation of Descriptor Systems. (with J. Carvalho). Proc. IEEE International Conference on Decision and Control , Las Vegas, NV, Dec 2002.

Eigenvalue Embedding in a Quadratic Pencil using Symmetric Low Rank Updates. (with J. Carvalho, Wen-Wei Lin and Chern-Shuh Wang), Preprint, 2001.

Finite Element Model Updating, Eigenstructure Assignment and Eigenvalue Embedding Techniques for Vibrating Systems. Mechanical Systems and Signal Processing , (Invited paper), special issue on Vibration Control, vol 16, nr 1, 83-96, 2001.

A New Block Algorithm for the Sylvester-observer Equation Arising in State-Estimation. (with J.B. Carvalho), Proc. IEEE International Conference on Decision and Control , pp 3898-3903, Orlando, FL, Dec 2001.

A Block Algorithm for Multi-input Eigenvalue Assignment Problem. (with J.B. Carvalho), Proc. IFAC / IEEE Symposium on System Structure and Control , paper nr. 110, Prague, Aug 2001.

Theory and computations of some inverse eigenvalue problems for the quadratic pencil, Contemporary Mathematics Volume Structured Matrices in Operator Theory, Control, and Signal and Image Processing, American Mathematical Society, Volume 280, 221-240, 2001.

Feedback control in distributed parameter gyroscopic systems : A solution of the partial eigenvalue assignment problem (with D. Sarkissian), Mechanical Systems and Signal Processing , (Invited paper) , special issue on Vibration Control, vol 16, nr 1, 3-17, 2001.

Spectrum Modification for Gyroscopic Systems. (with D. Sarkissian and Y. Ram), ZAMM , vol 82, 191-200.

Multi-Input Partial Pole Placement for Distributed Parameter Gyroscopic Systems. (with Y.M. Ram and D.R. Sarkissian), Proc. IEEE International Conference on Decision and Control , Sidney, Dec 2000.

Block Algorithms for State Estimation and Functional Observers. (with D. Sarkissian), Proc. IEEE Intern. Symp. Comp. Aided Control Systems Design , Anchorage, Sep 2000.

Partial eigenstructure assignment for the quadratic pencil (with S. Elhay, Y. Ram, and D. Sarkissian), Journal of Sound and Vibration , 230 , 101-110, 2000.

Single-input partial pole-placement for gyroscopic operator pencil (with Y. Ram and D. Sarkissian), Proc. Mathematical Theory of Networks and Systems , 2000.

Multi-input partial pole-placement for undamped gyroscopic distributed parameter systems (with Y. Ram and D. Sarkissian), Proc. IEEE Conference on Decision and Control , 2000 , 4661-4665

Multi-input Partial Eigenvalue Assignment for the Summetric Quadratic Pencil (with D. Sarkissian). Proceedings of the American Control Conference , 2244-2247, 1999.

Large-scale matrix computations in control, Applied Numerical Mathematics , Vol. 30 (1999),53-63.

Recent developments on nonmodal and partial modal approaches for control of vibration , Applied Numerical Mathematics , Vol. 30 (1999), 41-52.

Stability and Inertia, Lin. Alg. Appl. (special issue to honor Hans Schneider), (1999) 302/303, 563-600.

Multi-input partial eigenvalue assignment for the symmetric quadratic pencil (with D. Sarkissian), Proc. American Control Conference (1999),2244-2247

Numerical Linear Control Library--A Mathematica-based integrated Environment with Modern Control Algorithms , Proc. IEEE International Symposium on Computer Aided Control Systems Design (1999), 91-96.

Single-input eigenvalue assignment algorithms: A close-look (with Mark Arnold), SIAM J. Matrix Anal. Appl. , Vol. 19 (1998) 447-467.

Orthogonality and Partial Pole Assignment for the Symmetric Definite Quadratic Pencil. (with S. Elhay and Y. Ram) Linear Algebra and its Applications 257 , 29-48, 1997.

Krylov Subspace methods in Control: An overview, Proc. 36th IEEE Conference on Decision and Control (Invited paper), IEEE Press , Piscatawny (1997)), 3844-3848.

Generalized Arnoldi methods for the Sylvester-observer matrix equation and the eigenvalue assignment problem (with C. Hetti), Proc. 36th IEEE Conference on Decision and Control ( Invited paper ), IEEE Press Piscatawny (1997), 4379-4383.

Parallel algorithms for certain matrix computations (with B. Codenotti, K. Datta, and M. Leoncini), Theoretical Computer Science 180 (1997), 287-308.

An Arnoldi method for the Sylvester-observer matrix equation (with C. Hetti), Proc. European Control Conference (1997) ( Invited paper ).

Numerically Robust Pole Assignment for Second-Order Systems. (with E.K. Chu). Int. J. Control 4 , 1113-1127, 1996.

A parallel algorithm for the Sylvester-observer equation (with Chris Bischof and A. Purkayastha), SIAM J. Scientific Computations , vol. 17, No. 3 (1996), 686-698.

Numerical methods for linear control systems (with Daniel Boley), A book chapter in Systems and Control in the Twenty-First Century , Birkhauser, (1996), 51-74.

An algorithm for the partial multi-input pole assignment of a second-order control system (with S. Elhay and Y. Ram), Proc. Conference on Decision and Control , (1996), 2025-2029.

Single-input Eigenvalue Assignment Algorithms: A Close-Look. (with Mark Arnold) SIAM J. Matrix Analysis and Applications.

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