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Ülle Kotta
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- affiliation: Tallinn University of Technology, Estonia
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2020 – today
- 2024
- [j65]Arvo Kaldmäe, Ülle Kotta:
An algorithm to transform discrete-time state equations into the extended observer form. Autom. 163: 111598 (2024) - [j64]Tanel Mullari, Ülle Kotta, Arvo Kaldmäe, Vadim Kaparin, Ashutosh Simha:
Extended observer form with vector fields. Int. J. Control 97(10): 2399-2412 (2024) - [j63]Ashutosh Simha
, Vadim Kaparin
Extended Observer Forms for Submersive Discrete-Time Systems. IEEE Trans. Autom. Control. 69(4): 2684-2688 (2024) - 2023
- [j62]Arvo Kaldmäe
Minimal Realizations of Nonlinear Time-Delay Systems. IEEE Trans. Autom. Control. 68(11): 6766-6772 (2023) - [c46]Zbigniew Bartosiewicz, Arvo Kaldmäe, Ülle Kotta, Malgorzata Wyrwas:
Relations Between Modules Associated to Input-Output Nonlinear Equations with Delays and their Realizations. CDC 2023: 644-650 - [c45]Arvo Kaldmäe, Ülle Kotta:
A Note on Observability of Nonlinear Discrete-Time Systems. CDC 2023: 7483-7488 - 2022
- [j61]Mohammad Amin Sarafrazi
On the Stopping Criteria in Nonlinear Unknown Input Observability Condition. IEEE Trans. Autom. Control. 67(9): 4733-4737 (2022) - [c44]Francesco Carravetta, Mohammad Amin Sarafrazi, Zbigniew Bartosiewicz, Ülle Kotta:
Testing Generic Strong Accessibility of Nonlinear Control Systems via Polynomial (Quadratic) Immersion. CDC 2022: 1841-1846 - 2021
- [j60]Mohammad Amin Sarafrazi
On the finiteness of accessibility test for nonlinear discrete-time systems. Int. J. Control 94(9): 2330-2336 (2021) - [j59]Zbigniew Bartosiewicz
Accessibility and System Reduction of Nonlinear Time-Delay Control Systems. IEEE Trans. Autom. Control. 66(8): 3781-3788 (2021) - [c43]Zbigniew Bartosiewicz, Ülle Kotta
Accessibility and orbits for discrete-time nonlinear control systems. CDC 2021: 4594-4601 - 2020
- [j58]Alvo Aabloo, Juri Belikov
Challenges and Perspectives in Control of Ionic Polymer-Metal Composite (IPMC) Actuators: A Survey. IEEE Access 8: 121059-121073 (2020) - [j57]Mohammad Amin Sarafrazi, Zbigniew Bartosiewicz, Ülle Kotta
Comments on "PBH tests for nonlinear systems". Autom. 111 (2020) - [j56]Tanel Mullari, Ülle Kotta
Weak reachability and controllability of discrete-time nonlinear systems: generic approach and singular points. Int. J. Control 93(3): 483-489 (2020) - [j55]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): 1725 (2020) - [j54]Arkadiusz Mystkowski
Experimental validation of the Newton observer for a nonlinear flux-controlled AMB system operated with zero-bias flux. Int. J. Control 93(9): 2257-2266 (2020) - [j53]Ashutosh Simha
A Flapped Paddle-Fin for Improving Underwater Propulsive Efficiency of Oscillatory Actuation. IEEE Robotics Autom. Lett. 5(2): 3176-3181 (2020) - [j52]Mohammad Amin Sarafrazi
Finite determination of accessibility and singular points of nonlinear systems: An algebraic approach. Syst. Control. Lett. 136: 104600 (2020) - [j51]Francesco Carravetta
A Test for the Generic Strong Accessibility of Meromorphic Nonlinear Systems. IEEE Trans. Autom. Control. 65(2): 867-873 (2020)
2010 – 2019
- 2019
- [j50]Ülle Kotta
Degree of Dieudonné determinant defines the order of nonlinear system. Int. J. Control 92(3): 518-527 (2019) - [c42]Christian Meurer
Nonlinear Orientation Controller for a Compliant Robotic Fish Based on Asymmetric Actuation. ICRA 2019: 4688-4694 - [c41]Leszek Ambroziak, Ashutosh Simha, Ewa Pawluszewicz
Motor Failure Tolerant Control System With Self Diagnostics for Unmanned Multirotors. MMAR 2019: 422-427 - [i2]Mohammad Amin Sarafrazi, Ewa Pawluszewicz, Zbigniew Bartosiewicz, Ülle Kotta:
On the finiteness of accessibility test for nonlinear discrete-time systems. CoRR abs/1905.10154 (2019) - [i1]Mohammad Amin Sarafrazi, Ülle Kotta, Zbigniew Bartosiewicz:
Finite determination of accessibility and geometric structure of singular points for nonlinear systems. CoRR abs/1908.02905 (2019) - 2018
- [j49]Arvo Kaldmäe
Realization of time-delay systems. Autom. 90: 317-320 (2018) - [j48]Ülle Kotta
Minimal realizations of nonlinear systems. Autom. 95: 207-212 (2018) - [j47]Arvo Kaldmäe
Realization of Nonlinear Time-Delay Input-Output Equations. IEEE Control. Syst. Lett. 2(3): 369-374 (2018) - [j46]Vadim Kaparin
Transformation of nonlinear discrete-time system into the extended observer form. Int. J. Control 91(4): 848-858 (2018) - [j45]Arvo Kaldmäe, Ülle Kotta
Realization of nonlinear input-output equations in controller canonical form. Kybernetika 54(4): 736-747 (2018) - [c40]Ashutosh Simha, Witold Respondek, Arvo Kaldmäe, Vadim Kaparin
Intrinsic Conditions for Extended Observer Forms for Nonlinear Systems. CDC 2018: 1373-1378 - 2017
- [j44]Arkadiusz Mystkowski
Feedback linearization of an active magnetic bearing system operated with a zero-bias flux. Int. J. Appl. Math. Comput. Sci. 27(3): 539-548 (2017) - [j43]Arvo Kaldmäe
Input-output decoupling of discrete-time nonlinear systems by dynamic measurement feedback. Eur. J. Control 34: 31-38 (2017) - [j42]Ülle Kotta
Realisation of linear time-varying systems. Int. J. Control 90(9): 1951-1956 (2017) - [j41]Arvo Kaldmäe
Flatness Based Control of a HVAC System. Inf. Technol. Control. 46(4): 499-507 (2017) - [j40]Tanel Mullari
Forward and Backward Shifts of Vector Fields: Towards the Dual Algebraic Framework. IEEE Trans. Autom. Control. 62(6): 3029-3033 (2017) - 2016
- [j39]Juri Belikov
Algebraic Approach for Analysis and Control of a Water Tank System. Inf. Technol. Control. 45(2): 175-183 (2016) - [j38]Yu Kawano
Single-experiment observability decomposition of discrete-time analytic systems. Syst. Control. Lett. 97: 193-199 (2016) - [j37]Zbigniew Bartosiewicz
On accessibility conditions for state space nonlinear control systems on homogeneous time scales. Syst. Control. Lett. 98: 8-13 (2016) - [c39]Arvo Kaldmäe, Ülle Kotta
Disturbance decoupling problem in finite automata: Sensor location problem. CCA 2016: 481-486 - [c38]Arvo Kaldmäe
Disturbance decoupling in nonlinear hybrid systems. ICCA 2016: 86-91 - [c37]Monika Ciulkin, Ewa Pawluszewicz
Linearization by generalized input-output injections on homogeneous time scales. MMAR 2016: 48-53 - [c36]Seshadhri Srinivasan
Adaptive Controller for Networked Control Systems Subjected to Random Communication Delays. SOFA (1) 2016: 78-94 - 2015
- [j36]Ülle Kotta
Relaxing realizability conditions for discrete-time nonlinear systems. Autom. 58: 67-71 (2015) - [j35]Juri Belikov
Realization of nonlinear MIMO system on homogeneous time scales. Eur. J. Control 23: 48-54 (2015) - [j34]Vadim Kaparin
Transformation of nonlinear state equations into the observer form: Necessary and sufficient conditions in terms of one-forms. Kybernetika 51(1): 36-58 (2015) - [j33]Zbigniew Bartosiewicz
Static state feedback linearization of nonlinear control systems on homogeneous time scales. Math. Control. Signals Syst. 27(4): 523-550 (2015) - [j32]Yu Kawano
On Integrability of Observable Space for Discrete-Time Polynomial Control Systems. IEEE Trans. Autom. Control. 60(7): 1987-1991 (2015) - [c35]Zbigniew Bartosiewicz, Ülle Kotta
Transforming a set of nonlinear input-ouput equations into Popov form. CDC 2015: 7131-7136 - [c34]Yu Kawano
On integrability of observable space for discrete-time analytic systems. CDC 2015: 7137-7142 - [c33]Monika Ciulkin, Ewa Pawluszewicz
Input-output linearization by dynamic output feedback on homogeneous time scales. MMAR 2015: 477-482 - 2014
- [j31]Alexey N. Zhirabok, Ülle Kotta
Accommodation to defects in the discrete dynamic systems. Autom. Remote. Control. 75(6): 997-1009 (2014) - [j30]Arvo Kaldmäe
Input-output linearization of discrete-time systems by dynamic output feedback. Eur. J. Control 20(2): 73-78 (2014) - [j29]Juri Belikov
Comparison of LPV and nonlinear system theory: A realization problem. Syst. Control. Lett. 64: 72-78 (2014) - [j28]Juri Belikov
Adjoint Polynomial Formulas for Nonlinear State-Space Realization. IEEE Trans. Autom. Control. 59(1): 256-261 (2014) - [c32]Juri Belikov
Dynamic feedback linearization of nonlinear control systems on homogenous time scale. CCA 2014: 947-952 - 2013
- [j27]Arvo Kaldmäe
Measurement feedback disturbance decoupling in discrete-time nonlinear systems. Autom. 49(9): 2887-2891 (2013) - [j26]Vadim Kaparin
Extended observer form: simple existence conditions. Int. J. Control 86(5): 794-803 (2013) - [j25]Ülle Kotta
Feedback linearization and lattice theory. Syst. Control. Lett. 62(3): 248-255 (2013) - [c31]Seshadhri Srinivasan, Mishiga Vallabhan, Srini Ramaswamy, Ülle Kotta:
Adaptive LQR controller for Networked Control Systems subjected to random communication delays. ACC 2013: 783-787 - [c30]Juri Belikov
NLControl: Symbolic package for study of nonlinear control systems. CACSD 2013: 322-327 - [c29]Arvo Kaldmäe, Ülle Kotta
Input-output linearization by dynamic output feedback. ECC 2013: 1728-1733 - [c28]Seshadhri Srinivasan
A layered architecture for control functionality implementation in smart grids. ICNSC 2013: 100-105 - [c27]Ülle Kotta
The Minimal Time-Varying Realization of a Nonlinear Time-Invariant System. NOLCOS 2013: 518-523 - [c26]Arvo Kaldmäe
On Flatness of Discrete-Time Nonlinear Systems. NOLCOS 2013: 588-593 - 2012
- [j24]Ülle Kotta
Realization of discrete-time nonlinear input-output equations: Polynomial approach. Autom. 48(2): 255-262 (2012) - [j23]Miroslav Halás, Ülle Kotta
A transfer function approach to the realisation problem of nonlinear systems. Int. J. Control 85(3): 320-331 (2012) - [j22]Juri Belikov, Ülle Kotta, Maris Tõnso:
State-space realization of nonlinear control systems: unification and extension via pseudo-linear algebra. Kybernetika 48(6): 1100-1113 (2012) - [c25]Juri Belikov
Explicit formulas for the state coordinates in nonlinear MIMO realization problem on homogeneous time scales. CCA 2012: 1388-1393 - [c24]Arvo Kaldmäe, Ülle Kotta:
Dynamic measurement feedback in discrete-time nonlinear control systems. ACC 2012: 214-219 - [c23]Juri Belikov
Practical polynomial formulas in MIMO nonlinear realization problem. CDC 2012: 1253-1258 - [c22]Zbigniew Bartosiewicz, Ülle Kotta
Dual algebraic framework for discrete-time nonlinear control systems. CDC 2012: 1846-1851 - 2011
- [j21]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): 2024-2034 (2011) - [j20]Zbigniew Bartosiewicz
Control systems on regular time scales and their differential rings. Math. Control. Signals Syst. 22(3): 185-201 (2011) - [j19]Guofeng Fu, Miroslav Halás, Ülle Kotta
Some remarks on Kähler differentials and ordinary differentials in nonlinear control theory. Syst. Control. Lett. 60(9): 699-703 (2011) - [j18]Ülle Kotta
Linear Input-Output Equivalence and Row Reducedness of Discrete-Time Nonlinear Systems. IEEE Trans. Autom. Control. 56(6): 1421-1426 (2011) - [c21]Juri Belikov
Minimal realization of nonlinear MIMO equations in state-space form: Polynomial approach. CDC/ECC 2011: 7735-7740 - [c20]Ülle Kotta, Palle Kotta, Maris Tõnso
State-space realization of nonlinear input-output equations: Unification and extension via pseudo-linear algebra. ICCA 2011: 354-359 - [c19]Juri Belikov
Model matching problem for discrete-time nonlinear systems: Transfer function approach. ICCA 2011: 360-365 - [c18]Juri Belikov
On applicability of LPV tools for bilinear systems. ICCA 2011: 366-371 - [c17]Vadim Kaparin
Extended observer form for discrete-time nonlinear control systems. ICCA 2011: 507-512 - [c16]Sven Nõmm
Comparison of neural networks-based ANARX and NARX models by application of correlation tests. IJCNN 2011: 2113-2118 - 2010
- [j17]Ülle Kotta
Discussion on: "Unified Approach to the Problem of Full Decoupling via Output Feedback". Eur. J. Control 16(4): 326-328 (2010) - [j16]Ülle Kotta, Palle Kotta, Miroslav Halás:
Reduction and transfer equivalence of nonlinear control systems: unification and extension via pseudo-linear algebra. Kybernetika 46(5): 831-849 (2010) - [j15]Daniele Casagrande
Transfer Equivalence and Realization of Nonlinear Input-Output Delta-Differential Equations on Homogeneous Time Scales. IEEE Trans. Autom. Control. 55(11): 2601-2606 (2010)
2000 – 2009
- 2009
- [j14]Tanel Mullari, Ülle Kotta:
Transformation the Nonlinear System into the Observer Form: Simplification and Extension. Eur. J. Control 15(2): 177-183 (2009) - [j13]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): 1212-1218 (2009) - [j12]Ülle Kotta
Irreducibility, reduction and transfer equivalence of nonlinear input-output equations on homogeneous time scales. Syst. Control. Lett. 58(9): 646-651 (2009) - [c15]Zbigniew Bartosiewicz, Ülle Kotta, Ewa Pawluszewicz
Differential rings associated with control systems on regular time scales. ECC 2009: 242-247 - [c14]Maris Tõnso
Realization of Continuous-Time Nonlinear Input-Output Equations: Polynomial Approach. EUROCAST 2009: 633-640 - [c13]Miroslav Halás, Ülle Kotta
Submersive rational difference systems and their accessibility. ISSAC 2009: 175-182 - 2008
- [c12]Daniele Casagrande
Transfer equivalence and reduction of nonlinear delta differential equations on homogeneous time scale. ACC 2008: 5136-5141 - [c11]Miroslav Halás, Ülle Kotta
A polynomial approach to the synthesis of observers for nonlinear systems. CDC 2008: 3571-3576 - [c10]Ülle Kotta
Non-commutative determinants in nonlinear control theory: Preliminary ideas. ICARCV 2008: 815-820 - [c9]Ülle Kotta, Palle Kotta, Miroslav Halás:
Irreducibility and reduction of nonlinear control systems: Unification and extension via pseudo-linear algebra. ICARCV 2008: 1039-1043 - 2007
- [j11]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): 1607-1615 (2007) - [c8]Heli Rennik, Maris Tõnso, Ülle Kotta:
Webmathematica based tools for nonlinear control systems. ICINCO-SPSMC 2007: 178-183 - 2006
- [j10]Ülle Kotta
On realizability of neural networks-based input-output models in the classical state-space form. Autom. 42(7): 1211-1216 (2006) - [j9]Tanel Mullari, Ülle Kotta:
Simplification of the generalized state equations. Kybernetika 42(5): 617-628 (2006) - [c7]Ülle Kotta, Palle Kotta, Sven Nomm
Irreducibility Conditions for Continuous-time Multi-input Multi-output Nonlinear Systems. ICARCV 2006: 1-5 - [c6]Eduard Petlenkov
Neural Networks Based ANARX Structure for Identification and Model Based Control. ICARCV 2006: 1-5 - 2005
- [j8]Ülle Kotta
Equivalence of Different Realization Methods for Higher Order Nonlinear Input Output Differential Equations. Eur. J. Control 11(3): 185-193 (2005) - [c5]Claude H. Moog, Ülle Kotta
Equivalence to a (Strict) Feedforward Form of Nonlinear Discrete-Time Single-Input Control Systems. CDC/ECC 2005: 8018-8021 - 2004
- [j7]Eduardo Aranda-Bricaire, Ülle Kotta:
A geometric solution to the dynamic disturbance decoupling for discrete-time nonlinear systems. Kybernetika 40(2): 197-206 (2004) - 2003
- [c4]Ülle Kotta
On state space realizability of bilinear systems described by higher order difference equations. CDC 2003: 5685-5690 - [c3]Ülle Kotta, Tanel Mullari:
Realization of nonlinear systems described by input/output differential equations: Equivalence of different methods. ECC 2003: 1141-1144 - 2002
- [j6]Ronald K. Pearson, Ülle Kotta, Sven Nomm:
Systems with associative dynamics. Kybernetika 38(5): 585-600 (2002) - 2001
- [j5]Ülle Kotta
Transfer equivalence and realization of nonlinear higher order input-output difference equations. Autom. 37(11): 1771-1778 (2001) - [j4]Eduardo Aranda-Bricaire, Ülle Kotta
Generalized controlled invariance for discrete-time nonlinear systems with an application to the dynamic disturbance decoupling problem. IEEE Trans. Autom. Control. 46(1): 165-171 (2001) - 2000
- [j3]Ülle Kotta:
Input-output decoupling of nonlinear recursive systems. Kybernetika 36(1): 43-51 (2000) - [j2]Ülle Kotta
Comments on "On the discrete-time normal form". IEEE Trans. Autom. Control. 45(11) (2000) - [c2]Ülle Kotta
Irreducibility conditions for nonlinear input-output difference equations. CDC 2000: 3404-3408
1990 – 1999
- 1999
- [j1]Ülle Kotta
Transfer Equivalence and Realization of Nonlinear Higher Order Input/Output Difference Equations Using Mathematica. J. Circuits Syst. Comput. 9(1-2): 23-36 (1999) - [c1]Ülle Kotta:
Towards a solution of the state-space realization problem of a set of multi-input multi-output nonlinear difference equations. ECC 1999: 2748-2753
Coauthor Index
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