Search Results - "Kotta, Ü."
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1
Weak reachability and controllability of discrete-time nonlinear systems: generic approach and singular points
Published in International journal of control (03-03-2020)“…The paper finds the singular points from which (to which) the generically accessible system is not weakly reachable (controllable) in k steps. These points are…”
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2
Faulty Plant Reconfiguration Based on Disturbance Decoupling Methods
Published in Asian journal of control (01-05-2016)“…The disturbance decoupling problem by dynamic measurement feedback (DDDPM) for discrete‐time nonlinear control systems is considered in this paper. The…”
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3
Extended observer form: simple existence conditions
Published in International journal of control (01-05-2013)“…The paper focuses on the problem of transforming the discrete-time single-input single-output nonlinear state equations into the extended observer form, which,…”
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4
Transfer equivalence and realization of nonlinear higher order input–output difference equations
Published in Automatica (Oxford) (01-11-2001)“…Two fundamental modelling problems in nonlinear discrete-time control systems are studied using the language of differential forms. The discrete-time nonlinear…”
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5
Minimal realisation of bilinear and quadratic input-output difference equations in state-space form
Published in International journal of control (01-12-2011)“…This article studies the realisability property of discrete-time bilinear and quadratic input-output (i/o) equations in the classical state-space form…”
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6
Transformation of nonlinear discrete-time system into the extended observer form
Published in International journal of control (03-04-2018)“…The paper addresses the problem of transforming discrete-time single-input single-output nonlinear state equations into the extended observer form, which,…”
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7
Experimental validation of the Newton observer for a nonlinear flux-controlled AMB system operated with zero-bias flux
Published in International journal of control (01-09-2020)“…The paper presents the results of experimental validation of the Newton observer for estimation of the magnetic flux within the feedback control of a nonlinear…”
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8
Nonlinear discrete-time models: state-space vs. I/O representations
Published in Journal of process control (01-08-2004)“…This paper compares state-space and input–output realizations for nonlinear discrete-time dynamic models. For linear models, these two realizations are…”
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9
Observable space of the nonlinear control system on a homogeneous time scale
Published in Proceedings of the Estonian Academy of Sciences (01-01-2014)“…The observability property of the nonlinear system, defined on a homogeneous time scale is studied. The observability condition is provided through the notion…”
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10
State space realization of bilinear continuous-time input-output equations
Published in International journal of control (01-10-2007)“…This paper studies the realizability property of continuous-time bilinear input-output (i/o) equations in the classical state space form. Constraints on the…”
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11
Realisation of linear time-varying systems
Published in International journal of control (02-09-2017)“…In this paper, the realisation problem of linear multi-input multi-output, time-varying systems is studied. The approach, based on the theory of…”
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12
Generalization of Transfer Equivalence for Discrete-Time Non-Linear Systems: Comparison of Two Definitions
Published in International journal of control (20-05-2004)“…The problem of system reduction is studied for discrete-time non-linear single-input single-output systems described by high-order input-output (i/o)…”
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13
Classical state space realizability of input-output bilinear models
Published in International journal of control (15-08-2003)“…This paper studies the realizability property of bilinear input-output (i/o) models in the classical state space form. Constraints on the parameters of the…”
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14
On classical state space realisability of quadratic input-output differential equations
Published in International journal of control (01-07-2009)“…This article studies the realisability property of continuous-time quadratic input-output (i/o) equations in the classical state space form. Constraints on the…”
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15
Two Approaches for State Space Realization of NARMA Models: Bridging the Gap
Published in Mathematical and computer modelling of dynamical systems (01-03-2002)“…This paper studies the necessary and sufficient conditions for observable realization of a general class of nonlinear high-order input-output difference…”
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16
On accessibility conditions for state space nonlinear control systems on homogeneous time scales
Published in Systems & control letters (01-12-2016)“…An algebraic formalism for nonlinear control systems defined on homogeneous time scales is introduced. This formalism is based on the forward, backward shifts,…”
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17
On realizability of neural networks-based input–output models in the classical state-space form
Published in Automatica (Oxford) (01-07-2006)“…This paper proves that the typical neural network-based input/output model does not have a state-space realization and suggests the Additive Nonlinear…”
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18
Degree of Dieudonné determinant defines the order of nonlinear system
Published in International journal of control (04-03-2019)“…The paper proves that the order of the minimal state-space realisation of a set of irreducible implicit input--output (i/o) difference equations is equal to…”
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19
Computation of nonlinear eigenvalues based on the Ore determinant: preliminary results
Published in Proceedings of the Estonian Academy of Sciences (01-10-2024)“…The concept of eigenvalues has recently been generalized for nonlinear systems, but the method to find them is missing. Unlike the linear case, now one has to…”
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20
Transformation of nonlinear discrete-time state equations into the observer form: revision
Published in Proceedings of the Estonian Academy of Sciences (2023)“…Artiklis lihtsustatakse varem leitud tarvilikke ja piisavaid tingimusi olekuvorrandite vaatlejakujule viidavuseks olekuteisenduste abil…”
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