Input to state stability and allied system properties

SN Dashkovskiy, DV Efimov, ED Sontag - Automation and Remote Control, 2011 - Springer
The main results obtained in the field of input-state stable systems and systems with other
similar characteristics that were published over the last two decades were reviewed.

QFM: quenching flamelet-generated manifold for modelling of flame–wall interactions

DV Efimov, P de Goey, JA van Oijen - Combustion Theory and …, 2020 - Taylor & Francis
This work introduces a new method to improve the accuracy of the flamelet-generated
manifold (FGM) method under conditions of flame–wall interactions (FWI). Special attention is …

A hybrid robust non-homogeneous finite-time differentiator

DV Efimov, L Fridman - IEEE Transactions on Automatic …, 2011 - ieeexplore.ieee.org
A variant of super-twisting differentiator is proposed. Lyapunov function is designed and an
estimate on finite time of derivatives estimation is given. The differentiator is equipped with …

Oscillatority of nonlinear systems with static feedback

DV Efimov, AL Fradkov - SIAM journal on control and optimization, 2009 - SIAM
New Lyapunov-like conditions for oscillatority of dynamical systems in the sense of
Yakubovich are proposed. Unlike previous results these conditions are applicable to nonlinear …

Climate-dependent distribution of Lemna minor, L. turionifera and L.× japonica (Lemnaceae) in temperate Eurasia and high variability of their genome size

PA Volkova, MO Ivanova, DY Efimov… - Perspectives in Plant …, 2024 - Elsevier
In spite of a burst of duckweed biology studies, understanding their diversity is still in progress.
We examined 174 reliably-identified (intron length polymorphism in TUBB2) samples of …

Discretization of homogeneous systems using Euler method with a state-dependent step

D Efimov, A Polyakov, A Aleksandrov - Automatica, 2019 - Elsevier
Numeric approximations to the solutions of asymptotically stable homogeneous systems by
Euler method, with a step of discretization scaled by the state norm, are investigated (for the …

Yakubovich's oscillatority of circadian oscillations models

DV Efimov, AL Fradkov - Mathematical Biosciences, 2008 - Elsevier
The testing procedure of Yakubovich’s oscillatority property is presented. The procedure is
applied for two models of circadian oscillations [JC Leloup, A. Goldbeter, A model for …

Stability of homogeneous systems with distributed delay and time-varying perturbations

A Aleksandrov, D Efimov, E Fridman - Automatica, 2023 - Elsevier
For a class of nonlinear systems with homogeneous right-hand sides of non-zero degree
and distributed delays, the problem of stability robustness of the zero solution with respect to …

On ISS with respect to average value of disturbances: a time-delay approach

D Efimov, E Fridman - IEEE Transactions on Automatic Control, 2023 - ieeexplore.ieee.org
For input-affine nonlinear dynamical systems, an input-to-state stability analysis with respect
to (weighted) average values of exogenous perturbations is proposed. The time-delay …

Lyapunov--Krasovskii Functional for Discretized Homogeneous Systems

D Efimov, AY Aleksandrov - SIAM Journal on Control and Optimization, 2021 - SIAM
The paper is devoted to stability analysis of discrete-time time-delay systems, obtained after
explicit Euler discretization of (locally) homogeneous continuous-time models. The results …