Ülle Kotta

116 papers A* 1B 2C 11Misc 3Journal 69Unranked 30
YearRankTypeTitle / Venue / Authors
2025 J jnl
Algebraic Conditions for Accessibility of Discrete-Time Nonlinear Control Systems.
IEEE Trans. Autom. Control.
Zbigniew Bartosiewicz, Arvo Kaldmäe, Ülle Kotta, Malgorzata Wyrwas
2025 J jnl
Parameterized Feedback Linearization of Nonlinear Discrete-Time Control Systems.
IEEE Control. Syst. Lett.
Arvo Kaldmäe, Ülle Kotta
2024 J jnl
An algorithm to transform discrete-time state equations into the extended observer form.
Autom.
Arvo Kaldmäe, Ülle Kotta
2024 C conf
Extended Observer Form for Nonlinear System with Disturbances: Algorithm and Application.
ICARCV
Vadim Kaparin, Ashutosh Simha, Nilanjan Roy Chowdhury, Ülle Kotta, Yoash Levron, Juri Belikov
2024 J jnl
Extended Observer Forms for Submersive Discrete-Time Systems.
IEEE Trans. Autom. Control.
Ashutosh Simha, Vadim Kaparin, Tanel Mullari, Ülle Kotta
2024 J jnl
Extended observer form with vector fields.
Int. J. Control
Tanel Mullari, Ülle Kotta, Arvo Kaldmäe, Vadim Kaparin, Ashutosh Simha
2023 — conf
A Note on Observability of Nonlinear Discrete-Time Systems.
CDC
Arvo Kaldmäe, Ülle Kotta
2023 J jnl
Minimal Realizations of Nonlinear Time-Delay Systems.
IEEE Trans. Autom. Control.
Arvo Kaldmäe, Zbigniew Bartosiewicz, Ülle Kotta, Malgorzata Wyrwas
2023 — conf
Relations Between Modules Associated to Input-Output Nonlinear Equations with Delays and their Realizations.
CDC
Zbigniew Bartosiewicz, Arvo Kaldmäe, Ülle Kotta, Malgorzata Wyrwas
2022 J jnl
On the Stopping Criteria in Nonlinear Unknown Input Observability Condition.
IEEE Trans. Autom. Control.
Mohammad Amin Sarafrazi, Ülle Kotta, Zbigniew Bartosiewicz
2022 — conf
Testing Generic Strong Accessibility of Nonlinear Control Systems via Polynomial (Quadratic) Immersion.
CDC
Francesco Carravetta, Mohammad Amin Sarafrazi, Zbigniew Bartosiewicz, Ülle Kotta
2021 J jnl
Accessibility and System Reduction of Nonlinear Time-Delay Control Systems.
IEEE Trans. Autom. Control.
Zbigniew Bartosiewicz, Arvo Kaldmäe, Yu Kawano, Ülle Kotta, Ewa Pawluszewicz, Ashutosh Simha, Malgorzata Wyrwas
2021 — conf
Accessibility and orbits for discrete-time nonlinear control systems.
CDC
Zbigniew Bartosiewicz, Ülle Kotta, Malgorzata Wyrwas
2021 J jnl
On the finiteness of accessibility test for nonlinear discrete-time systems.
Int. J. Control
Mohammad Amin Sarafrazi, Ewa Pawluszewicz, Zbigniew Bartosiewicz, Ülle Kotta
2020 J jnl
A Flapped Paddle-Fin for Improving Underwater Propulsive Efficiency of Oscillatory Actuation.
IEEE Robotics Autom. Lett.
Ashutosh Simha, Roza Gkliva, Ülle Kotta, Maarja Kruusmaa
2020 J jnl
A Test for the Generic Strong Accessibility of Meromorphic Nonlinear Systems.
IEEE Trans. Autom. Control.
Francesco Carravetta, Mohammad Amin Sarafrazi, Zbigniew Bartosiewicz, Ülle Kotta
2020 J jnl
Challenges and Perspectives in Control of Ionic Polymer-Metal Composite (IPMC) Actuators: A Survey.
IEEE Access
Alvo Aabloo, Juri Belikov, Vadim Kaparin, Ülle Kotta
2020 J jnl
Comments on "PBH tests for nonlinear systems".
Autom.
Mohammad Amin Sarafrazi, Zbigniew Bartosiewicz, Ülle Kotta
2020 J jnl
Comments on 'A new kind of nonlinear disturbance observer for nonlinear systems with applications to cruise control of air-breathing hypersonic vehicles'.
Int. J. Control
Arvo Kaldmäe, Ülle Kotta
2020 J jnl
Experimental validation of the Newton observer for a nonlinear flux-controlled AMB system operated with zero-bias flux.
Int. J. Control
Arkadiusz Mystkowski, A. Kierdelewicz, Ülle Kotta, Vadim Kaparin
2020 J jnl
Finite determination of accessibility and singular points of nonlinear systems: An algebraic approach.
Syst. Control. Lett.
Mohammad Amin Sarafrazi, Ülle Kotta, Zbigniew Bartosiewicz
2020 J jnl
Weak reachability and controllability of discrete-time nonlinear systems: generic approach and singular points.
Int. J. Control
Tanel Mullari, Ülle Kotta, Zbigniew Bartosiewicz, Mohammad Amin Sarafrazi, Claude H. Moog, Ewa Pawluszewicz
2019 J jnl
Degree of Dieudonné determinant defines the order of nonlinear system.
Int. J. Control
Ülle Kotta, Juri Belikov, Miroslav Halás, Alar Leibak
2019 J jnl
Finite determination of accessibility and geometric structure of singular points for nonlinear systems.
CoRR
Mohammad Amin Sarafrazi, Ülle Kotta, Zbigniew Bartosiewicz
2019 Misc conf
Motor Failure Tolerant Control System With Self Diagnostics for Unmanned Multirotors.
MMAR
Leszek Ambroziak, Ashutosh Simha, Ewa Pawluszewicz, Ülle Kotta, Arkadiusz Bozko, Miroslaw Kondratiuk
2019 A* conf
Nonlinear Orientation Controller for a Compliant Robotic Fish Based on Asymmetric Actuation.
ICRA
Christian Meurer, Ashutosh Simha, Ülle Kotta, Maarja Kruusmaa
2019 J jnl
On the finiteness of accessibility test for nonlinear discrete-time systems.
CoRR
Mohammad Amin Sarafrazi, Ewa Pawluszewicz, Zbigniew Bartosiewicz, Ülle Kotta
2018 — conf
Intrinsic Conditions for Extended Observer Forms for Nonlinear Systems.
CDC
Ashutosh Simha, Witold Respondek, Arvo Kaldmäe, Vadim Kaparin, Ülle Kotta
2018 J jnl
Minimal realizations of nonlinear systems.
Autom.
Ülle Kotta, Claude H. Moog, Maris Tõnso
2018 J jnl
Realization of Nonlinear Time-Delay Input-Output Equations.
IEEE Control. Syst. Lett.
Arvo Kaldmäe, Ülle Kotta, Maris Tonso
2018 J jnl
Realization of nonlinear input-output equations in controller canonical form.
Kybernetika
Arvo Kaldmäe, Ülle Kotta
2018 J jnl
Realization of time-delay systems.
Autom.
Arvo Kaldmäe, Ülle Kotta
2018 J jnl
Transformation of nonlinear discrete-time system into the extended observer form.
Int. J. Control
Vadim Kaparin, Ülle Kotta
2017 J jnl
Feedback linearization of an active magnetic bearing system operated with a zero-bias flux.
Int. J. Appl. Math. Comput. Sci.
Arkadiusz Mystkowski, Vadim Kaparin, Ülle Kotta, Ewa Pawluszewicz, Maris Tõnso
2017 J jnl
Flatness Based Control of a HVAC System.
Inf. Technol. Control.
Arvo Kaldmäe, Ülle Kotta
2017 J jnl
Forward and Backward Shifts of Vector Fields: Towards the Dual Algebraic Framework.
IEEE Trans. Autom. Control.
Tanel Mullari, Ülle Kotta, Zbigniew Bartosiewicz, Ewa Pawluszewicz, Claude H. Moog
2017 J jnl
Input-output decoupling of discrete-time nonlinear systems by dynamic measurement feedback.
Eur. J. Control
Arvo Kaldmäe, Ülle Kotta
2017 J jnl
Realisation of linear time-varying systems.
Int. J. Control
Ülle Kotta, Maris Tõnso
2016 — conf
Adaptive Controller for Networked Control Systems Subjected to Random Communication Delays.
SOFA (1)
Seshadhri Srinivasan, Saravanakumar Gurusamy, B. Subathra, N. Sundarajan, Ülle Kotta, Srini Ramaswamy, Valentina Emilia Balas
2016 J jnl
Algebraic Approach for Analysis and Control of a Water Tank System.
Inf. Technol. Control.
Juri Belikov, Ülle Kotta, Aleksei Tepljakov
2016 — conf
Disturbance decoupling in nonlinear hybrid systems.
ICCA
Arvo Kaldmäe, Ülle Kotta, Alexey Ye. Shumsky, Alexey N. Zhirabok
2016 C conf
Disturbance decoupling problem in finite automata: Sensor location problem.
CCA
Arvo Kaldmäe, Ülle Kotta, Alexey Ye. Shumsky, Alexey N. Zhirabok
2016 Misc conf
Linearization by generalized input-output injections on homogeneous time scales.
MMAR
Monika Ciulkin, Ewa Pawluszewicz, Vadim Kaparin, Ülle Kotta
2016 J jnl
On accessibility conditions for state space nonlinear control systems on homogeneous time scales.
Syst. Control. Lett.
Zbigniew Bartosiewicz, Ülle Kotta, Tanel Mullari, Maris Tõnso, Malgorzata Wyrwas
2016 J jnl
Single-experiment observability decomposition of discrete-time analytic systems.
Syst. Control. Lett.
Yu Kawano, Ülle Kotta
2015 Misc conf
Input-output linearization by dynamic output feedback on homogeneous time scales.
MMAR
Monika Ciulkin, Ewa Pawluszewicz, Vadim Kaparin, Ülle Kotta
2015 J jnl
On Integrability of Observable Space for Discrete-Time Polynomial Control Systems.
IEEE Trans. Autom. Control.
Yu Kawano, Ülle Kotta
2015 — conf
On integrability of observable space for discrete-time analytic systems.
CDC
Yu Kawano, Ülle Kotta
2015 J jnl
Realization of nonlinear MIMO system on homogeneous time scales.
Eur. J. Control
Juri Belikov, Ülle Kotta, Maris Tõnso
2015 J jnl
Relaxing realizability conditions for discrete-time nonlinear systems.
Autom.
Ülle Kotta, Kurt Schlacher, Maris Tõnso
2015 J jnl
Static state feedback linearization of nonlinear control systems on homogeneous time scales.
Math. Control. Signals Syst.
Zbigniew Bartosiewicz, Ülle Kotta, Maris Tõnso, Malgorzata Wyrwas
2015 J jnl
Transformation of nonlinear state equations into the observer form: Necessary and sufficient conditions in terms of one-forms.
Kybernetika
Vadim Kaparin, Ülle Kotta
2015 — conf
Transforming a set of nonlinear input-ouput equations into Popov form.
CDC
Zbigniew Bartosiewicz, Ülle Kotta, Ewa Pawluszewicz, Maris Tonso, Malgorzata Wyrwas
2014 J jnl
Accommodation to defects in the discrete dynamic systems.
Autom. Remote. Control.
Alexey N. Zhirabok, Ülle Kotta, Alexey E. Shumsky
2014 J jnl
Adjoint Polynomial Formulas for Nonlinear State-Space Realization.
IEEE Trans. Autom. Control.
Juri Belikov, Ülle Kotta, Maris Tonso
2014 J jnl
Comparison of LPV and nonlinear system theory: A realization problem.
Syst. Control. Lett.
Juri Belikov, Ülle Kotta, Maris Tõnso
2014 C conf
Dynamic feedback linearization of nonlinear control systems on homogenous time scale.
CCA
Juri Belikov, Ülle Kotta, Maris Tonso, Zbigniew Bartosiewicz, Malgorzata Wyrwas
2014 J jnl
Input-output linearization of discrete-time systems by dynamic output feedback.
Eur. J. Control
Arvo Kaldmäe, Ülle Kotta
2013 — conf
A layered architecture for control functionality implementation in smart grids.
ICNSC
Seshadhri Srinivasan, Ülle Kotta, Srini Ramaswamy
2013 C conf
Adaptive LQR controller for Networked Control Systems subjected to random communication delays.
ACC
Seshadhri Srinivasan, Mishiga Vallabhan, Srini Ramaswamy, Ülle Kotta
2013 J jnl
Extended observer form: simple existence conditions.
Int. J. Control
Vadim Kaparin, Ülle Kotta, Tanel Mullari
2013 J jnl
Feedback linearization and lattice theory.
Syst. Control. Lett.
Ülle Kotta, Maris Tõnso, Alexey Ye. Shumsky, Alexey N. Zhirabok
2013 — conf
Input-output linearization by dynamic output feedback.
ECC
Arvo Kaldmäe, Ülle Kotta
2013 J jnl
Measurement feedback disturbance decoupling in discrete-time nonlinear systems.
Autom.
Arvo Kaldmäe, Ülle Kotta, Alexey Ye. Shumsky, Alexey N. Zhirabok
2013 — conf
NLControl: Symbolic package for study of nonlinear control systems.
CACSD
Juri Belikov, Ülle Kotta, Maris Tonso
2013 — conf
On Flatness of Discrete-Time Nonlinear Systems.
NOLCOS
Arvo Kaldmäe, Ülle Kotta
2013 — conf
The Minimal Time-Varying Realization of a Nonlinear Time-Invariant System.
NOLCOS
Ülle Kotta, Claude H. Moog, Maris Tõnso
2012 J jnl
A transfer function approach to the realisation problem of nonlinear systems.
Int. J. Control
Miroslav Halás, Ülle Kotta
2012 — conf
Dual algebraic framework for discrete-time nonlinear control systems.
CDC
Zbigniew Bartosiewicz, Ülle Kotta, Claude H. Moog, Tanel Mullari, Ewa Pawluszewicz
2012 C conf
Dynamic measurement feedback in discrete-time nonlinear control systems.
ACC
Arvo Kaldmäe, Ülle Kotta
2012 C conf
Explicit formulas for the state coordinates in nonlinear MIMO realization problem on homogeneous time scales.
CCA
Juri Belikov, Ülle Kotta, Maris Tonso
2012 — conf
Practical polynomial formulas in MIMO nonlinear realization problem.
CDC
Juri Belikov, Palle Kotta, Ülle Kotta, Maris Tonso
2012 J jnl
Realization of discrete-time nonlinear input-output equations: Polynomial approach.
Autom.
Ülle Kotta, Maris Tonso
2012 J jnl
State-space realization of nonlinear control systems: unification and extension via pseudo-linear algebra.
Kybernetika
Juri Belikov, Ülle Kotta, Maris Tõnso
2011 B conf
Comparison of neural networks-based ANARX and NARX models by application of correlation tests.
IJCNN
Sven Nõmm, Ülle Kotta
2011 J jnl
Control systems on regular time scales and their differential rings.
Math. Control. Signals Syst.
Zbigniew Bartosiewicz, Ülle Kotta, Ewa Pawluszewicz, Malgorzata Wyrwas
2011 — conf
Extended observer form for discrete-time nonlinear control systems.
ICCA
Vadim Kaparin, Ülle Kotta
2011 J jnl
Linear Input-Output Equivalence and Row Reducedness of Discrete-Time Nonlinear Systems.
IEEE Trans. Autom. Control.
Ülle Kotta, Zbigniew Bartosiewicz, Sven Nomm, Ewa Pawluszewicz
2011 J jnl
Minimal realisation of bilinear and quadratic input-output difference equations in state-space form.
Int. J. Control
Juri Belikov, Palle Kotta, Ülle Kotta, Alan Solon Ivor Zinober
2011 — conf
Minimal realization of nonlinear MIMO equations in state-space form: Polynomial approach.
CDC/ECC
Juri Belikov, Ülle Kotta, Maris Tõnso
2011 — conf
Model matching problem for discrete-time nonlinear systems: Transfer function approach.
ICCA
Juri Belikov, Miroslav Halás, Ülle Kotta, Claude H. Moog
2011 — conf
On applicability of LPV tools for bilinear systems.
ICCA
Juri Belikov, Ülle Kotta, Maris Tõnso
2011 J jnl
Some remarks on Kähler differentials and ordinary differentials in nonlinear control theory.
Syst. Control. Lett.
Guofeng Fu, Miroslav Halás, Ülle Kotta, Ziming Li
2011 — conf
State-space realization of nonlinear input-output equations: Unification and extension via pseudo-linear algebra.
ICCA
Ülle Kotta, Palle Kotta, Maris Tõnso, Miroslav Halás
2010 J jnl
Discussion on: "Unified Approach to the Problem of Full Decoupling via Output Feedback".
Eur. J. Control
Ülle Kotta, Tanel Mullari
2010 J jnl
Reduction and transfer equivalence of nonlinear control systems: unification and extension via pseudo-linear algebra.
Kybernetika
Ülle Kotta, Palle Kotta, Miroslav Halás
2010 J jnl
Transfer Equivalence and Realization of Nonlinear Input-Output Delta-Differential Equations on Homogeneous Time Scales.
IEEE Trans. Autom. Control.
Daniele Casagrande, Ülle Kotta, Maris Tonso, Malgorzata Wyrwas
2009 — conf
Differential rings associated with control systems on regular time scales.
ECC
Zbigniew Bartosiewicz, Ülle Kotta, Ewa Pawluszewicz, Malgorzata Wyrwas
2009 J jnl
Irreducibility, reduction and transfer equivalence of nonlinear input-output equations on homogeneous time scales.
Syst. Control. Lett.
Ülle Kotta, Zbigniew Bartosiewicz, Ewa Pawluszewicz, Malgorzata Wyrwas
2009 J jnl
On classical state space realisability of quadratic input-output differential equations.
Int. J. Control
Ülle Kotta, Palle Kotta, Maris Tõnso, Alan Solon Ivor Zinober
2009 — conf
Realization of Continuous-Time Nonlinear Input-Output Equations: Polynomial Approach.
EUROCAST
Maris Tõnso, Ülle Kotta
2009 B conf
Submersive rational difference systems and their accessibility.
ISSAC
Miroslav Halás, Ülle Kotta, Ziming Li, Huaifu Wang, Chunming Yuan
2009 J jnl
Transformation the Nonlinear System into the Observer Form: Simplification and Extension.
Eur. J. Control
Tanel Mullari, Ülle Kotta
2008 — conf
A polynomial approach to the synthesis of observers for nonlinear systems.
CDC
Miroslav Halás, Ülle Kotta
2008 C conf
Irreducibility and reduction of nonlinear control systems: Unification and extension via pseudo-linear algebra.
ICARCV
Ülle Kotta, Palle Kotta, Miroslav Halás
2008 C conf
Non-commutative determinants in nonlinear control theory: Preliminary ideas.
ICARCV
Ülle Kotta, Alar Leibak, Miroslav Halás
2008 C conf
Transfer equivalence and reduction of nonlinear delta differential equations on homogeneous time scale.
ACC
Daniele Casagrande, Ülle Kotta, Malgorzata Wyrwas, Maris Tonso
2007 J jnl
State space realization of bilinear continuous-time input-output equations.
Int. J. Control
Ülle Kotta, Tanel Mullari, Alan Solon Ivor Zinober, Palle Kotta
2007 — conf
Webmathematica based tools for nonlinear control systems.
ICINCO-SPSMC
Heli Rennik, Maris Tõnso, Ülle Kotta
2006 C conf
Irreducibility Conditions for Continuous-time Multi-input Multi-output Nonlinear Systems.
ICARCV
Ülle Kotta, Palle Kotta, Sven Nomm, Maris Tõnso
2006 C conf
Neural Networks Based ANARX Structure for Identification and Model Based Control.
ICARCV
Eduard Petlenkov, Sven Nomm, Ülle Kotta
2006 J jnl
On realizability of neural networks-based input-output models in the classical state-space form.
Autom.
Ülle Kotta, Fahmida N. Chowdhury, Sven Nõmm
2006 J jnl
Simplification of the generalized state equations.
Kybernetika
Tanel Mullari, Ülle Kotta
2005 J jnl
Equivalence of Different Realization Methods for Higher Order Nonlinear Input ­ Output Differential Equations.
Eur. J. Control
Ülle Kotta, Tanel Mullari
2005 — conf
Equivalence to a (Strict) Feedforward Form of Nonlinear Discrete-Time Single-Input Control Systems.
CDC/ECC
Claude H. Moog, Ülle Kotta
2004 J jnl
A geometric solution to the dynamic disturbance decoupling for discrete-time nonlinear systems.
Kybernetika
Eduardo Aranda-Bricaire, Ülle Kotta
2003 — conf
On state space realizability of bilinear systems described by higher order difference equations.
CDC
Ülle Kotta, Sven Nomm, Alan Solon Ivor Zinober
2003 — conf
Realization of nonlinear systems described by input/output differential equations: Equivalence of different methods.
ECC
Ülle Kotta, Tanel Mullari
2002 J jnl
Systems with associative dynamics.
Kybernetika
Ronald K. Pearson, Ülle Kotta, Sven Nomm
2001 J jnl
Generalized controlled invariance for discrete-time nonlinear systems with an application to the dynamic disturbance decoupling problem.
IEEE Trans. Autom. Control.
Eduardo Aranda-Bricaire, Ülle Kotta
2001 J jnl
Transfer equivalence and realization of nonlinear higher order input-output difference equations.
Autom.
Ülle Kotta, Alan Solon Ivor Zinober, P. Liu
2000 J jnl
Comments on "On the discrete-time normal form".
IEEE Trans. Autom. Control.
Ülle Kotta
2000 J jnl
Input-output decoupling of nonlinear recursive systems.
Kybernetika
Ülle Kotta
2000 — conf
Irreducibility conditions for nonlinear input-output difference equations.
CDC
Ülle Kotta
1999 — conf
Towards a solution of the state-space realization problem of a set of multi-input multi-output nonlinear difference equations.
ECC
Ülle Kotta
1999 J jnl
Transfer Equivalence and Realization of Nonlinear Higher Order Input/Output Difference Equations Using Mathematica.
J. Circuits Syst. Comput.
Ülle Kotta, Maris Tõnso