Forward and Backward Shifts of Vector Fields: Towards the Dual Algebraic Framework

JOURNAL ARTICLE published June 2017 in IEEE Transactions on Automatic Control

Research funded by ERC (PUT481) | Bialystok University of Technology (S/WI/1/2016,S/WM/1/2016)

Authors: Tanel Mullari | Ulle Kotta | Zbigniew Bartosiewicz | Ewa Pawluszewicz | Claude H. Moog

Minimal realisation of bilinear and quadratic input–output difference equations in state-space form

JOURNAL ARTICLE published December 2011 in International Journal of Control

Authors: J. Belikov | P. Kotta | Ü. Kotta | A.S.I. Zinober

On the Stopping Criteria in Nonlinear Unknown Input Observability Condition

JOURNAL ARTICLE published September 2022 in IEEE Transactions on Automatic Control

Research funded by Politechnika Bialostocka (WZ/WI-IIT/1/2020)

Authors: Mohammad Amin Sarafrazi | Ulle Kotta | Zbigniew Bartosiewicz

Model reduction for nonlinear systems and nonlinear time-delay systems from input/output data

PROCEEDINGS ARTICLE published December 2015 in 2015 54th IEEE Conference on Decision and Control (CDC)

Authors: Giordano Scarciotti | Alessandro Astolfi

INPUT-OUTPUT DECOUPLING OF NONLINEAR DISCRETE-TIME SYSTEMS BY STATIC OUTPUT FEEDBACK

JOURNAL ARTICLE published 2002 in IFAC Proceedings Volumes

Authors: C.H. Moog | R. Pothin | Ü. Kotta | S. Nõmm

Linear positive control systems on time scales; controllability

JOURNAL ARTICLE published September 2013 in Mathematics of Control, Signals, and Systems

Authors: Zbigniew Bartosiewicz

On Local Input-Output Stability of Nonlinear Feedback Systems via Local Graph Separation

JOURNAL ARTICLE published 2022 in IEEE Control Systems Letters

Research funded by Engineering and Physical Sciences Research Council (EP/R008876/1)

Authors: P. Hilborne | A. Lanzon

On the finiteness of accessibility test for nonlinear discrete-time systems

JOURNAL ARTICLE published 2 September 2021 in International Journal of Control

Authors: Mohammad Amin Sarafrazi | Ewa Pawłuszewicz | Zbigniew Bartosiewicz | Ülle Kotta

Removing the input derivatives in the generalized bilinear state equations

JOURNAL ARTICLE published 2009 in Proceedings of the Estonian Academy of Sciences

Authors: T Mullari | Ü Kotta | P Kotta | M Tõnso | A S Zinober

Extension of the concept of transfer function to discrete-time nonlinear control systems

PROCEEDINGS ARTICLE published July 2007 in 2007 European Control Conference (ECC)

Authors: Miroslav Halas | Ulle Kotta

Certainty-equivalence design for output regulation of a nonlinear benchmark system

PROCEEDINGS ARTICLE published 2009 in 2009 American Control Conference

Authors: Fabio Celani

State realization of nonlinear MIMO discrete-time systems described by input-output equations

PROCEEDINGS ARTICLE published in Proceedings of the 37th IEEE Conference on Decision and Control (Cat. No.98CH36171)

Authors: N. Sadegh

State equivalence of discrete-time nonlinear control systems to state affine form up to input/output injection

JOURNAL ARTICLE published January 1998 in Systems & Control Letters

Authors: G. Besançon | H. Hammouri | S. Benamor

Necessary and Sufficient Conditions in Terms of Differential-Forms for Linearization of the State Equations up to Input-Output Injections

PROCEEDINGS ARTICLE published 2010 in UKACC International Conference on CONTROL 2010

Authors: V. Kaparin | U. Kotta

Lyapunov functions in stability of nonlinear systems on time scales

JOURNAL ARTICLE published March 2011 in Journal of Difference Equations and Applications

Authors: Zbigniew Bartosiewicz | Ewa Piotrowska

Transfer equivalence and realization of nonlinear higher order i/o difference equations using maple

JOURNAL ARTICLE published July 1999 in IFAC Proceedings Volumes

Authors: Ü. Kotta | P. Liu | A.S.I. Zinober

On stabilisability of nonlinear systems on time scales

JOURNAL ARTICLE published January 2013 in International Journal of Control

Authors: Zbigniew Bartosiewicz | Ewa Piotrowska

Sampled-Data Reduction of Nonlinear Input-Delayed Dynamics

JOURNAL ARTICLE published July 2017 in IEEE Control Systems Letters

Authors: Mattia Mattioni | Salvatore Monaco | Dorothee Normand-Cyrot

ON CLASSICAL STATE SPACE REALIZABILITY OF QUADRATIC INPUT-OUTPUT DIFFERENTIAL EQUATIONS

JOURNAL ARTICLE published 2007 in IFAC Proceedings Volumes

Authors: ü. Kotta | P. Kotta | M. Tõnso | A.S.I. Zinober

WebMathematica-based tools for discrete-time nonlinear control systems

JOURNAL ARTICLE published 2009 in Proceedings of the Estonian Academy of Sciences

Authors: M Tõnso | H Rennik | Ü Kotta