Invariants and canonical forms for linear multivariable systems under the action of orthogonal transformation groups. - Michail M. Konstantinov; Petko Hr. Petkov; Nikolai D. Christov (Kybernetika, 1981)

Remark on algorithm 590.: Fortran subroutines for computing deflating subspaces with specified spectrum. - Petko Hr. Petkov; Nikolai D. Christov; Mihail Mihaylov Konstantinov (ACM Trans. Math. Softw., 1984)

Numerically stable algorithm for pole assignment of linear single-input systems. - Petko Hr. Petkov; Nikolai D. Christov; Michail M. Konstantinov (Kybernetika, 1986)

Perturbation Analysis of Matrix Quadratic Equations. - Michail M. Konstantinov; Petko Hr. Petkov; Nikolai D. Christov (SIAM J. Sci. Comput., 1990)

Perturbation analysis of the discrete Riccati equation. - Michail M. Konstantinov; Petko Hr. Petkov; Nikolai D. Christov (Kybernetika, 1993)

Comments on "Scaling of the discrete-time algebraic Riccati equation to enhance stability of the Schur solution method" [with reply]. - Petko Hr. Petkov; Nikolai D. Christov; Mihail Konstantinov; T. Gunmundson; Crystal Kenney; Alan J. Laub (IEEE Trans. Autom. Control., 1993)

Nonlocal Perturbation Analysis of the Schur System of a Matrix. - M. M. Konstantinov; Petko Hr. Petkov; Nikolai D. Christov (SIAM J. Matrix Anal. Appl., 1994)

Numerical Solution of High Order Matrix Riccati Equations. - Petko Hr. Petkov; Nikolai D. Christov; Michail M. Konstantinov (WNAA, 1996)

Sensitivity analysis of the feedback synthesis problem. - Michail M. Konstantinov; Petko Hr. Petkov; Nikolai D. Christov (IEEE Trans. Autom. Control., 1997)

Sensitivity analysis of generalized Riccati equations. - Michail M. Konstantinov; Petko Hr. Petkov; Nicolai D. Christov; Alain Barraud; Suzanne Lesecq; Da-Wei Gu (ACC, 2000)

New perturbation bounds for Sylvester equations. - Nikolai D. Christov; Suzanne Lesecq; Michail M. Konstantinov; Petko Hr. Petkov; Alain Barraud (CDC, 2000)

From Sensitivity Analysis to Random Floating Point Arithmetics - Application to Sylvester Equations. - Alain Barraud; Suzanne Lesecq; Nikolai D. Christov (NAA, 2000)

On the Local Sensitivity of the Lyapunov Equations. - Suzanne Lesecq; Alain Barraud; Nikolai D. Christov (NAA, 2000)

On the non-local sensitivity of Sylvester equations. - Nikolai D. Christov; Suzanne Lesecq; Mihail Mihaylov Konstantinov; Petko Hr. Petkov; Alain Barraud (ACC, 2001)

On the conditioning of the generalised discrete-time Lyapunov and Riccati equations. - Da-Wei Gu; Suzanne Lesecq; Nikolai D. Christov; Michail M. Konstantinov; Petko Hr. Petkov; Alain Barraud (ECC, 2001)

On the local sensitivity of the mixed H2/H∞ optimisation problem. - Nikolai D. Christov; M. M. Koristantinov; Petko Hr. Petkov (ACC, 2002)

Conditioning of the discrete-time infinite-horizon H∞ filtering problem. - Nikolai D. Christov; Mohamed Najim; Éric Grivel; David Henry (ACC, 2002)

On the synthesis of time optimal control for a class of linear systems. - Borislav G. Penev; Nicolai D. Christov (ACC, 2002)

New perturbation bounds for the discrete-time H∞ filtering problem. - Nikolai D. Christov; Mohamed Najim; Éric Grivel; David Henry (CDC, 2002)

LAPACK-based condition and error estimators for Kalman filter design. - Petko Hr. Petkov; Michail M. Konstantinov; Nikolai D. Christov (CDC, 2003)

On the state-space analysis in the synthesis of time-optimal control for a class of linear systems. - Borislav G. Penev; Nicolai D. Christov (ACC, 2004)

New Perturbation Bounds for the Continuous-Time H infinity-Optimization Problem. - Nikolai D. Christov; Michail M. Konstantinov; Petko Hr. Petkov (NAA, 2004)

Sensitivity Analysis of Generalized Lyapunov Equations. - Michail M. Konstantinov; Petko Hr. Petkov; Nikolai D. Christov (NAA, 2004)

Conditioning and Error Estimation in the Numerical Solution of Matrix Riccati Equations. - Petko Hr. Petkov; Michail M. Konstantinov; Nikolai D. Christov (NAA, 2004)

A fast time-optimal control synthesis algorithm for a class of linear systems. - Borislav Penev; Nikolai D. Christov (ACC, 2005)

Relevance of H∞ filtering for speech enhancement. - David Labarre; Éric Grivel; Mohamed Najim; Nikolai D. Christov (ICASSP (4), 2005)

The technique of splitting operators in perturbation control theory. - Mihail Konstantinov; Petko Hr. Petkov; Nikolai D. Christov (Kybernetika, 2005)

Improved Sensitivity Estimate for the H2 Estimation Problem. - Nikolai D. Christov; Mohamed Najim; Éric Grivel (International Conference on Computational Science (1), 2006)

Numerical Method for Regional Pole Assignment of Linear Control Systems. - Petko Hr. Petkov; Nikolai D. Christov; Michail M. Konstantinov (Numerical Methods and Applications, 2006)

Numerical Methods for Robust Control. - Petko Hr. Petkov; A. S. Yonchev; Nikolai D. Christov; Michail M. Konstantinov (LSSC, 2007)

Dual Hinfinity Algorithms for Signal Processing - Application to Speech Enhancement. - David Labarre; Éric Grivel; Mohamed Najim; Nikolai D. Christov (IEEE Trans. Signal Process., 2007)

Perturbation Bounds for Certain Matrix Expressions and Numerical Solution of Matrix Equations. - Michail M. Konstantinov; Petko Hr. Petkov; Nikolai D. Christov (NAA, 2008)

LAPACK-Based Condition Estimates for the Discrete-Time LQG Design. - Petko Hr. Petkov; Michail M. Konstantinov; Nikolai D. Christov (NAA, 2008)

On the Local Sensitivity of the Discrete-Time Control Problem. - A. S. Yonchev; Petko Hr. Petkov; Nikolai D. Christov; Michail M. Konstantinov (NAA, 2008)

Estimation of autoregressive fading channels based on two cross-coupled H∞ filters. - Ali Jamoos; Éric Grivel; Nikolai D. Christov; Mohamed Najim (Signal Image Video Process., 2009)

Modified Pseudo-Inverse Method with Generalized Linear Quadratic Regulator for fault tolerant Model Matching with prescribed stability degree. - Bogdan D. Ciubotaru; Marcel Staroswiecki; Nikolai D. Christov (CDC/ECC, 2011)

Routing Algorithm and Kinematic Model of Mobile Robots in Wireless Sensors Networks. - Popeanga Catalin; Nikolai D. Christov (ICINCO (2), 2011)

Recursive model free control of variable speed wind turbine systems. - Haoping Wang; Andreea Pintea; Nikolai D. Christov; Pierre Borne; Dumitru Popescu (CCA, 2012)

Piecewise continuous observer design used for networked or visual servoing control systems. - Haoping Wang; Yang Tian; Nikolai D. Christov; Christian Vasseur (CCA, 2012)

Kalman vs H∞ filter in terms of convergence and accuracy: Application to carrier frequency offset estimation. - Hector Poveda; Éric Grivel; Guillaume Ferré; Nikolai D. Christov (EUSIPCO, 2012)

Extended hybrid technique for control redesign with stabilization and correction. - Bogdan D. Ciubotaru; Marcel Staroswiecki; Nikolai D. Christov (ACC, 2013)

Discrete-time MPC with constraints for variable speed wind turbines. - Raluca Mateescu; Dan Stefanoiu; Nikolai D. Christov (ICSCS, 2013)

Attitude Control of a Quadrotor Using Model Free Based Sliding Model Controller. - Haoping Wang; Xuefei Ye; Yang Tian; Nikolai D. Christov (CSCS, 2015)

Piecewise-continuous observers for linear systems with sampled and delayed output. - Haoping Wang; Yang Tian; Nikolai D. Christov (Int. J. Syst. Sci., 2016)

Model-free-based terminal SMC of quadrotor attitude and position. - Haoping Wang; Xuefei Ye; Yang Tian; Gang Zheng 002; Nikolai D. Christov (IEEE Trans. Aerosp. Electron. Syst., 2016)

Unknown input observer design for faults estimation using linear parameter varying model. Application to wind turbine systems. - Shanzhi Li; Haoping Wang; Abdel Aitouche; Nicolai D. Christov (ICSC, 2018)

Architecture for Embedded Supervisory System of Distributed Renewable Energy Sources. - Cristian Miron; Severus Constantin Olteanu 001; Nicolai D. Christov; Abdel Aitouche (ICSC, 2018)

Active fault tolerance control of a wind turbine system using an unknown input observer with an actuator fault. - Shanzhi Li; Haoping Wang; Abdel Aitouche; Yang Tian; Nikolai D. Christov (Int. J. Appl. Math. Comput. Sci., 2018)

Sliding mode observer design for fault and disturbance estimation using Takagi-Sugeno model. - Shanzhi Li; Haoping Wang; Abdel Aitouche; Nikolai D. Christov (Eur. J. Control, 2018)

Piecewise Continuous -Communication Disturbance Observer Design for Networked Visual Servo Control Systems with Sampled and Variable Delayed Output. - Haoping Wang; Rui Gong; Yang Tian; Nikolai D. Christov (Inf. Technol. Control., 2018)

Active fault tolerant control of wind turbine systems based on DFIG with actuator fault and disturbance using Takagi-Sugeno fuzzy model. - Shanzhi Li; Haoping Wang; Abdel Aitouche; Nikolai D. Christov (J. Frankl. Inst., 2018)

Nonsingular Fast Terminal Sliding Mode Based Model-Free Control: Application to Glycemia Regulation Systems. - Yang Tian; Haoping Wang; Qi Wu; Maiting Hu; Nikolai D. Christov (Inf. Technol. Control., 2019)

Kalman Filter based Newton Extremum Seeking Control for Maximum Gases Production Rates of Anaerobic Digestion Process. - Haoping Wang; Maobo Hu; Yang Tian; Ivan Simeonov; Lyudmila Kabaivanova; Nikolai D. Christov (Inf. Technol. Control., 2020)

A volatile fatty acids adaptive observer-based hierarchical optimal controller design to maximum gas production of two-stage anaerobic digestion process. - Hongxuan Li; Yang Tian; Haoping Wang; Ivan Simeonov; Nikolai D. Christov (Comput. Chem. Eng., 2024)