Ülle Kotta

ORCID

Publication Activity (10 Years)

Years Active: 1999-2024
Publications (10 Years): 41

Top Venues

IEEE Trans. Autom. Control.

CDC

Int. J. Control

Autom.

Publications

Arvo Kaldmäe, Ülle Kotta
An algorithm to transform discrete-time state equations into the extended observer form. Autom. 163 (2024)
Ashutosh Simha, Vadim Kaparin, Tanel Mullari, Ülle Kotta
Extended Observer Forms for Submersive Discrete-Time Systems. IEEE Trans. Autom. Control. 69 (4) (2024)
Arvo Kaldmäe, Ülle Kotta
A Note on Observability of Nonlinear Discrete-Time Systems. CDC (2023)
Zbigniew Bartosiewicz, Arvo Kaldmäe, Ülle Kotta, Malgorzata Wyrwas
Relations Between Modules Associated to Input-Output Nonlinear Equations with Delays and their Realizations. CDC (2023)
Arvo Kaldmäe, Zbigniew Bartosiewicz, Ülle Kotta, Malgorzata Wyrwas
Minimal Realizations of Nonlinear Time-Delay Systems. IEEE Trans. Autom. Control. 68 (11) (2023)
Francesco Carravetta, Mohammad Amin Sarafrazi, Zbigniew Bartosiewicz, Ülle Kotta
Testing Generic Strong Accessibility of Nonlinear Control Systems via Polynomial (Quadratic) Immersion. CDC (2022)
Mohammad Amin Sarafrazi, Ülle Kotta, Zbigniew Bartosiewicz
On the Stopping Criteria in Nonlinear Unknown Input Observability Condition. IEEE Trans. Autom. Control. 67 (9) (2022)
Mohammad Amin Sarafrazi, Ewa Pawluszewicz, Zbigniew Bartosiewicz, Ülle Kotta
On the finiteness of accessibility test for nonlinear discrete-time systems. Int. J. Control 94 (9) (2021)
Zbigniew Bartosiewicz, Arvo Kaldmäe, Yu Kawano, Ülle Kotta, Ewa Pawluszewicz, Ashutosh Simha, Malgorzata Wyrwas
Accessibility and System Reduction of Nonlinear Time-Delay Control Systems. IEEE Trans. Autom. Control. 66 (8) (2021)
Zbigniew Bartosiewicz, Ülle Kotta, Malgorzata Wyrwas
Accessibility and orbits for discrete-time nonlinear control systems. CDC (2021)
Alvo Aabloo, Juri Belikov, Vadim Kaparin, Ülle Kotta
Challenges and Perspectives in Control of Ionic Polymer-Metal Composite (IPMC) Actuators: A Survey. IEEE Access 8 (2020)
Arkadiusz Mystkowski, A. Kierdelewicz, Ülle Kotta, Vadim Kaparin
Experimental validation of the Newton observer for a nonlinear flux-controlled AMB system operated with zero-bias flux. Int. J. Control 93 (9) (2020)
Mohammad Amin Sarafrazi, Ülle Kotta, Zbigniew Bartosiewicz
Finite determination of accessibility and singular points of nonlinear systems: An algebraic approach. Syst. Control. Lett. 136 (2020)
Ashutosh Simha, Roza Gkliva, Ülle Kotta, Maarja Kruusmaa
A Flapped Paddle-Fin for Improving Underwater Propulsive Efficiency of Oscillatory Actuation. IEEE Robotics Autom. Lett. 5 (2) (2020)
Francesco Carravetta, Mohammad Amin Sarafrazi, Zbigniew Bartosiewicz, Ülle Kotta
A Test for the Generic Strong Accessibility of Meromorphic Nonlinear Systems. IEEE Trans. Autom. Control. 65 (2) (2020)
Tanel Mullari, Ülle Kotta, Zbigniew Bartosiewicz, Mohammad Amin Sarafrazi, Claude H. Moog, Ewa Pawluszewicz
Weak reachability and controllability of discrete-time nonlinear systems: generic approach and singular points. Int. J. Control 93 (3) (2020)
Arvo Kaldmäe, Ülle Kotta
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 93 (7) (2020)
Mohammad Amin Sarafrazi, Zbigniew Bartosiewicz, Ülle Kotta
Comments on "PBH tests for nonlinear systems". Autom. 111 (2020)
Christian Meurer, Ashutosh Simha, Ülle Kotta, Maarja Kruusmaa
Nonlinear Orientation Controller for a Compliant Robotic Fish Based on Asymmetric Actuation. ICRA (2019)
Mohammad Amin Sarafrazi, Ülle Kotta, Zbigniew Bartosiewicz
Finite determination of accessibility and geometric structure of singular points for nonlinear systems. CoRR (2019)
Mohammad Amin Sarafrazi, Ewa Pawluszewicz, Zbigniew Bartosiewicz, Ülle Kotta
On the finiteness of accessibility test for nonlinear discrete-time systems. CoRR (2019)
Ülle Kotta, Juri Belikov, Miroslav Halás, Alar Leibak
Degree of Dieudonné determinant defines the order of nonlinear system. Int. J. Control 92 (3) (2019)
Leszek Ambroziak, Ashutosh Simha, Ewa Pawluszewicz, Ülle Kotta, Arkadiusz Bozko, Miroslaw Kondratiuk
Motor Failure Tolerant Control System With Self Diagnostics for Unmanned Multirotors. MMAR (2019)
Arvo Kaldmäe, Ülle Kotta
Realization of time-delay systems. Autom. 90 (2018)
Ashutosh Simha, Witold Respondek, Arvo Kaldmäe, Vadim Kaparin, Ülle Kotta
Intrinsic Conditions for Extended Observer Forms for Nonlinear Systems. CDC (2018)
Arvo Kaldmäe, Ülle Kotta
Realization of nonlinear input-output equations in controller canonical form. Kybernetika 54 (4) (2018)
Vadim Kaparin, Ülle Kotta
Transformation of nonlinear discrete-time system into the extended observer form. Int. J. Control 91 (4) (2018)
Ülle Kotta, Claude H. Moog, Maris Tõnso
Minimal realizations of nonlinear systems. Autom. 95 (2018)
Arvo Kaldmäe, Ülle Kotta, Maris Tonso
Realization of Nonlinear Time-Delay Input-Output Equations. IEEE Control. Syst. Lett. 2 (3) (2018)
Arkadiusz Mystkowski, Vadim Kaparin, Ülle Kotta, Ewa Pawluszewicz, Maris Tõnso
Feedback linearization of an active magnetic bearing system operated with a zero-bias flux. Int. J. Appl. Math. Comput. Sci. 27 (3) (2017)
Ülle Kotta, Maris Tõnso
Realisation of linear time-varying systems. Int. J. Control 90 (9) (2017)
Arvo Kaldmäe, Ülle Kotta
Input-output decoupling of discrete-time nonlinear systems by dynamic measurement feedback. Eur. J. Control 34 (2017)
Tanel Mullari, Ülle Kotta, Zbigniew Bartosiewicz, Ewa Pawluszewicz, Claude H. Moog
Forward and Backward Shifts of Vector Fields: Towards the Dual Algebraic Framework. IEEE Trans. Autom. Control. 62 (6) (2017)
Arvo Kaldmäe, Ülle Kotta
Flatness Based Control of a HVAC System. Inf. Technol. Control. 46 (4) (2017)
Zbigniew Bartosiewicz, Ülle Kotta, Tanel Mullari, Maris Tõnso, Malgorzata Wyrwas
On accessibility conditions for state space nonlinear control systems on homogeneous time scales. Syst. Control. Lett. 98 (2016)
Yu Kawano, Ülle Kotta
Single-experiment observability decomposition of discrete-time analytic systems. Syst. Control. Lett. 97 (2016)
Juri Belikov, Ülle Kotta, Aleksei Tepljakov
Algebraic Approach for Analysis and Control of a Water Tank System. Inf. Technol. Control. 45 (2) (2016)
Arvo Kaldmäe, Ülle Kotta, Alexey Ye. Shumsky, Alexey N. Zhirabok
Disturbance decoupling problem in finite automata: Sensor location problem. CCA (2016)
Arvo Kaldmäe, Ülle Kotta, Alexey Ye. Shumsky, Alexey N. Zhirabok
Disturbance decoupling in nonlinear hybrid systems. ICCA (2016)
Monika Ciulkin, Ewa Pawluszewicz, Vadim Kaparin, Ülle Kotta
Linearization by generalized input-output injections on homogeneous time scales. MMAR (2016)
Seshadhri Srinivasan, Saravanakumar Gurusamy, B. Subathra, N. Sundarajan, Ülle Kotta, Srini Ramaswamy, Valentina Emilia Balas
Adaptive Controller for Networked Control Systems Subjected to Random Communication Delays. SOFA (1) (2016)
Monika Ciulkin, Ewa Pawluszewicz, Vadim Kaparin, Ülle Kotta
Input-output linearization by dynamic output feedback on homogeneous time scales. MMAR (2015)
Vadim Kaparin, Ülle Kotta
Transformation of nonlinear state equations into the observer form: Necessary and sufficient conditions in terms of one-forms. Kybernetika 51 (1) (2015)
Ülle Kotta, Kurt Schlacher, Maris Tõnso
Relaxing realizability conditions for discrete-time nonlinear systems. Autom. 58 (2015)
Yu Kawano, Ülle Kotta
On Integrability of Observable Space for Discrete-Time Polynomial Control Systems. IEEE Trans. Autom. Control. 60 (7) (2015)
Zbigniew Bartosiewicz, Ülle Kotta, Ewa Pawluszewicz, Maris Tonso, Malgorzata Wyrwas
Transforming a set of nonlinear input-ouput equations into Popov form. CDC (2015)
Zbigniew Bartosiewicz, Ülle Kotta, Maris Tõnso, Malgorzata Wyrwas
Static state feedback linearization of nonlinear control systems on homogeneous time scales. Math. Control. Signals Syst. 27 (4) (2015)
Juri Belikov, Ülle Kotta, Maris Tõnso
Realization of nonlinear MIMO system on homogeneous time scales. Eur. J. Control 23 (2015)
Yu Kawano, Ülle Kotta
On integrability of observable space for discrete-time analytic systems. CDC (2015)
Alexey N. Zhirabok, Ülle Kotta, A. E. Shumsky
Accommodation to defects in the discrete dynamic systems. Autom. Remote. Control. 75 (6) (2014)
Juri Belikov, Ülle Kotta, Maris Tonso
Adjoint Polynomial Formulas for Nonlinear State-Space Realization. IEEE Trans. Autom. Control. 59 (1) (2014)
Juri Belikov, Ülle Kotta, Maris Tõnso
Comparison of LPV and nonlinear system theory: A realization problem. Syst. Control. Lett. 64 (2014)
Juri Belikov, Ülle Kotta, Maris Tonso, Zbigniew Bartosiewicz, Malgorzata Wyrwas
Dynamic feedback linearization of nonlinear control systems on homogenous time scale. CCA (2014)
Arvo Kaldmäe, Ülle Kotta
Input-output linearization of discrete-time systems by dynamic output feedback. Eur. J. Control 20 (2) (2014)
Seshadhri Srinivasan, Ülle Kotta, Srini Ramaswamy
A layered architecture for control functionality implementation in smart grids. ICNSC (2013)
Ülle Kotta, Claude H. Moog, Maris Tõnso
The Minimal Time-Varying Realization of a Nonlinear Time-Invariant System. NOLCOS (2013)
Arvo Kaldmäe, Ülle Kotta
Input-output linearization by dynamic output feedback. ECC (2013)
Ülle Kotta, Maris Tõnso, Alexey Ye. Shumsky, Alexey N. Zhirabok
Feedback linearization and lattice theory. Syst. Control. Lett. 62 (3) (2013)
Vadim Kaparin, Ülle Kotta, Tanel Mullari
Extended observer form: simple existence conditions. Int. J. Control 86 (5) (2013)
Arvo Kaldmäe, Ülle Kotta, Alexey Ye. Shumsky, Alexey N. Zhirabok
Measurement feedback disturbance decoupling in discrete-time nonlinear systems. Autom. 49 (9) (2013)
Arvo Kaldmäe, Ülle Kotta
On Flatness of Discrete-Time Nonlinear Systems. NOLCOS (2013)
Juri Belikov, Ülle Kotta, Maris Tonso
NLControl: Symbolic package for study of nonlinear control systems. CACSD (2013)
Seshadhri Srinivasan, Mishiga Vallabhan, Srini Ramaswamy, Ülle Kotta
Adaptive LQR controller for Networked Control Systems subjected to random communication delays. ACC (2013)
Juri Belikov, Ülle Kotta, Maris Tonso
Explicit formulas for the state coordinates in nonlinear MIMO realization problem on homogeneous time scales. CCA (2012)
Zbigniew Bartosiewicz, Ülle Kotta, Claude H. Moog, Tanel Mullari, Ewa Pawluszewicz
Dual algebraic framework for discrete-time nonlinear control systems. CDC (2012)
Miroslav Halás, Ülle Kotta
A transfer function approach to the realisation problem of nonlinear systems. Int. J. Control 85 (3) (2012)
Juri Belikov, Palle Kotta, Ülle Kotta, Maris Tonso
Practical polynomial formulas in MIMO nonlinear realization problem. CDC (2012)
Ülle Kotta, Maris Tonso
Realization of discrete-time nonlinear input-output equations: Polynomial approach. Autom. 48 (2) (2012)
Arvo Kaldmäe, Ülle Kotta
Dynamic measurement feedback in discrete-time nonlinear control systems. ACC (2012)
Juri Belikov, Ülle Kotta, Maris Tõnso
State-space realization of nonlinear control systems: unification and extension via pseudo-linear algebra. Kybernetika 48 (6) (2012)
Juri Belikov, Miroslav Halás, Ülle Kotta, Claude H. Moog
Model matching problem for discrete-time nonlinear systems: Transfer function approach. ICCA (2011)
Juri Belikov, Ülle Kotta, Maris Tõnso
Minimal realization of nonlinear MIMO equations in state-space form: Polynomial approach. CDC/ECC (2011)
Zbigniew Bartosiewicz, Ülle Kotta, Ewa Pawluszewicz, Malgorzata Wyrwas
Control systems on regular time scales and their differential rings. Math. Control. Signals Syst. 22 (3) (2011)
Sven Nõmm, Ülle Kotta
Comparison of neural networks-based ANARX and NARX models by application of correlation tests. IJCNN (2011)
Juri Belikov, Ülle Kotta, Maris Tõnso
On applicability of LPV tools for bilinear systems. ICCA (2011)
Ülle Kotta, Zbigniew Bartosiewicz, Sven Nomm, Ewa Pawluszewicz
Linear Input-Output Equivalence and Row Reducedness of Discrete-Time Nonlinear Systems. IEEE Trans. Autom. Control. 56 (6) (2011)
Guofeng Fu, Miroslav Halás, Ülle Kotta, Ziming Li
Some remarks on Kähler differentials and ordinary differentials in nonlinear control theory. Syst. Control. Lett. 60 (9) (2011)
Vadim Kaparin, Ülle Kotta
Extended observer form for discrete-time nonlinear control systems. ICCA (2011)
Juri Belikov, Palle Kotta, Ülle Kotta, Alan Solon Ivor Zinober
Minimal realisation of bilinear and quadratic input-output difference equations in state-space form. Int. J. Control 84 (12) (2011)
Ülle Kotta, Palle Kotta, Maris Tõnso, Miroslav Halás
State-space realization of nonlinear input-output equations: Unification and extension via pseudo-linear algebra. ICCA (2011)
Ülle Kotta, Tanel Mullari
Discussion on: "Unified Approach to the Problem of Full Decoupling via Output Feedback". Eur. J. Control 16 (4) (2010)
Daniele Casagrande, Ülle Kotta, Maris Tonso, Malgorzata Wyrwas
Transfer Equivalence and Realization of Nonlinear Input-Output Delta-Differential Equations on Homogeneous Time Scales. IEEE Trans. Autom. Control. 55 (11) (2010)
Ülle Kotta, Palle Kotta, Miroslav Halás
Reduction and transfer equivalence of nonlinear control systems: unification and extension via pseudo-linear algebra. Kybernetika 46 (5) (2010)
Maris Tõnso, Ülle Kotta
Realization of Continuous-Time Nonlinear Input-Output Equations: Polynomial Approach. EUROCAST (2009)
Miroslav Halás, Ülle Kotta, Ziming Li, Huaifu Wang, Chunming Yuan
Submersive rational difference systems and their accessibility. ISSAC (2009)
Ülle Kotta, Palle Kotta, Maris Tõnso, Alan Solon Ivor Zinober
On classical state space realisability of quadratic input-output differential equations. Int. J. Control 82 (7) (2009)
Ülle Kotta, Zbigniew Bartosiewicz, Ewa Pawluszewicz, Malgorzata Wyrwas
Irreducibility, reduction and transfer equivalence of nonlinear input-output equations on homogeneous time scales. Syst. Control. Lett. 58 (9) (2009)
Zbigniew Bartosiewicz, Ülle Kotta, Ewa Pawluszewicz, Malgorzata Wyrwas
Differential rings associated with control systems on regular time scales. ECC (2009)
Tanel Mullari, Ülle Kotta
Transformation the Nonlinear System into the Observer Form: Simplification and Extension. Eur. J. Control 15 (2) (2009)
Ülle Kotta, Palle Kotta, Miroslav Halás
Irreducibility and reduction of nonlinear control systems: Unification and extension via pseudo-linear algebra. ICARCV (2008)
Miroslav Halás, Ülle Kotta
A polynomial approach to the synthesis of observers for nonlinear systems. CDC (2008)
Ülle Kotta, Alar Leibak, Miroslav Halás
Non-commutative determinants in nonlinear control theory: Preliminary ideas. ICARCV (2008)
Daniele Casagrande, Ülle Kotta, Malgorzata Wyrwas, Maris Tonso
Transfer equivalence and reduction of nonlinear delta differential equations on homogeneous time scale. ACC (2008)
Ülle Kotta, Tanel Mullari, Alan Solon Ivor Zinober, Palle Kotta
State space realization of bilinear continuous-time input-output equations. Int. J. Control 80 (10) (2007)
Heli Rennik, Maris Tõnso, Ülle Kotta
Webmathematica based tools for nonlinear control systems. ICINCO-SPSMC (2007)
Eduard Petlenkov, Sven Nomm, Ülle Kotta
Neural Networks Based ANARX Structure for Identification and Model Based Control. ICARCV (2006)
Ülle Kotta, Fahmida N. Chowdhury, Sven Nõmm
On realizability of neural networks-based input-output models in the classical state-space form. Autom. 42 (7) (2006)
Ülle Kotta, Palle Kotta, Sven Nomm, Maris Tõnso
Irreducibility Conditions for Continuous-time Multi-input Multi-output Nonlinear Systems. ICARCV (2006)
Tanel Mullari, Ülle Kotta
Simplification of the generalized state equations. Kybernetika 42 (5) (2006)
Ülle Kotta, Tanel Mullari
Equivalence of Different Realization Methods for Higher Order Nonlinear Input Output Differential Equations. Eur. J. Control 11 (3) (2005)

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Publication Activity (10 Years)

Top Topics

Top Venues

Ülle Kotta