Articles with "adaptive finite" as a keyword



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Adaptive Finite-Time Robust Control of Nonlinear Delay Hamiltonian Systems Via Lyapunov-Krasovskii Method

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Published in 2018 at "Asian Journal of Control"

DOI: 10.1002/asjc.1556

Abstract: This paper investigates the adaptive finite-time robust control problem of a class of nonlinear time-delay Hamiltonian systems via the Lyapunov-Krasovskii (L-K) method, and proposes some delay-dependent results on the issue. Different from existing works, this… read more here.

Keywords: adaptive finite; finite time; robust control; control ... See more keywords
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Adaptive finite‐time consensus tracking for multiple uncertain mechanical systems with input saturation

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Published in 2017 at "International Journal of Robust and Nonlinear Control"

DOI: 10.1002/rnc.3741

Abstract: Summary This paper investigates the problem of finite-time consensus tracking for a class of multiple uncertain mechanical systems under switching topologies. In the presence of uncertainties and input saturations, a distributed observer-based adaptive finite-time tracking… read more here.

Keywords: adaptive finite; finite time; consensus tracking; time consensus ... See more keywords
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Adaptive finite‐time fault‐tolerant control for interconnected nonlinear systems

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Published in 2020 at "International Journal of Robust and Nonlinear Control"

DOI: 10.1002/rnc.5366

Abstract: This paper addresses the adaptive finite‐time output tracking control problem for nonlinear large‐scale systems whose power‐exponentials are positive odd rational numbers. The considered systems contain actuator loss‐of‐effectiveness and bias fault, which can be addressed by… read more here.

Keywords: time; finite time; adaptive finite; fault tolerant ... See more keywords
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An adaptive finite‐time stable control law for manipulator robots with unknown parameters

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Published in 2021 at "International Journal of Robust and Nonlinear Control"

DOI: 10.1002/rnc.5538

Abstract: This article develops an adaptive finite‐time stable control algorithm for an accurate manipulation of robot arms considering unknown model parameters and external disturbances. First, a state‐dependent twisting control algorithm is developed for the robust manipulation… read more here.

Keywords: finite time; adaptive finite; stable control; time stable ... See more keywords
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Robust adaptive finite‐time trajectory tracking control of a quadrotor aircraft

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Published in 2021 at "International Journal of Robust and Nonlinear Control"

DOI: 10.1002/rnc.5743

Abstract: This article mainly investigates the problem of tracking the flight trajectory for a quadrotor aircraft with uncertain parameters and external disturbances. Combined with the model structure, the quadrotor aircraft system can be divided into position… read more here.

Keywords: finite time; system; quadrotor aircraft; adaptive finite ... See more keywords
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Adaptive finite element method for elliptic optimal control problems: convergence and optimality

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Published in 2017 at "Numerische Mathematik"

DOI: 10.1007/s00211-016-0827-9

Abstract: In this paper we consider the convergence analysis of adaptive finite element method for elliptic optimal control problems with pointwise control constraints. We use variational discretization concept to discretize the control variable and piecewise linear… read more here.

Keywords: finite element; adaptive finite; element method; control ... See more keywords
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Convergence and quasi-optimality of adaptive finite element methods for harmonic forms

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Published in 2017 at "Numerische Mathematik"

DOI: 10.1007/s00211-016-0862-6

Abstract: Numerical computation of harmonic forms (typically called harmonic fields in three space dimensions) arises in various areas, including computer graphics and computational electromagnetics. The finite element exterior calculus framework also relies extensively on accurate computation… read more here.

Keywords: finite element; adaptive finite; element methods; harmonic forms ... See more keywords
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Global adaptive finite-time control for uncertain nonlinear systems with actuator faults and unknown control directions

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Published in 2019 at "Nonlinear Dynamics"

DOI: 10.1007/s11071-019-05146-8

Abstract: In this paper, the global adaptive finite-time stabilization problem is investigated for a class of uncertain nonlinear systems with actuator faults and unknown control directions. The lower bounds of the actuation effectiveness, the upper bounds… read more here.

Keywords: finite time; global adaptive; adaptive finite; control ... See more keywords
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Adaptive Finite-time Tracking Control for Class of Uncertain Nonlinearly Parameterized Systems with Input Delay

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Published in 2020 at "International Journal of Control, Automation and Systems"

DOI: 10.1007/s12555-019-0739-4

Abstract: In this paper, the tracking problem for a class of uncertain nonlinearly parameterized systems with input delay based the adaptive finite-time control scheme is investigated. The Pade approximation method is employed to handle the input… read more here.

Keywords: adaptive finite; finite time; control; class uncertain ... See more keywords
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Aspects of an adaptive finite element method for the fractional Laplacian: A priori and a posteriori error estimates, efficient implementation and multigrid solver☆☆☆

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Published in 2017 at "Computer Methods in Applied Mechanics and Engineering"

DOI: 10.1016/j.cma.2017.08.019

Abstract: Abstract We develop all of the components needed to construct an adaptive finite element code that can be used to approximate fractional partial differential equations, on non-trivial domains in d ≥ 1 dimensions. Our main… read more here.

Keywords: finite element; adaptive finite; error estimates; error ... See more keywords
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Convergence of an adaptive finite element DtN method for the elastic wave scattering by periodic structures

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Published in 2020 at "Computer Methods in Applied Mechanics and Engineering"

DOI: 10.1016/j.cma.2019.112722

Abstract: Abstract Consider the scattering of a time-harmonic elastic plane wave by a periodic rigid surface. The elastic wave propagation is governed by the two-dimensional Navier equation. Based on a Dirichlet-to-Neumann (DtN) map, a transparent boundary… read more here.

Keywords: elastic wave; finite element; adaptive finite; method ... See more keywords