Results 11 to 20 of about 15,960,811 (247)

Adaptive finite elements for viscoelastic deformation problems [PDF]

open access: yes, 2008
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis is concerned with the theoretical and computational aspects of generating solutions to problems involving materials with fading memory, known as
Hill, Harry
core   +7 more sources

Finite element solutions to boundary value problems [PDF]

open access: yes, 1976
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis consists of two distinct parts which deal with two-point boundary value problems and parabolic problems, respectively.
Moore, P
core   +7 more sources

Trajectory Tracking Robust Control Method Based on Finite-Time Convergence of Manipulator with Nonsingular Fast Terminal Sliding Mode Surface

open access: yesJournal of Control Science and Engineering, 2022
In order to make the manipulator track the desired trajectory in a finite time, a new control method based on fast nonsingular terminal sliding mode has been designed.
Hanqing Sun   +5 more
doaj   +1 more source

A Novel Active Fault-Tolerant Tracking Control for Robot Manipulators with Finite-Time Stability

open access: yesSensors, 2021
Many terminal sliding mode controllers (TSMCs) have been suggested to obtain exact tracking control of robotic manipulators in finite time. The ordinary method is based on TSMCs that secure trajectory tracking under the assumptions such as the known ...
Thanh Nguyen Truong   +3 more
doaj   +1 more source

Stability and Convergence Analysis of a Domain Decomposition FE/FD Method for Maxwell’s Equations in the Time Domain

open access: yesAlgorithms, 2022
Stability and convergence analyses for the domain decomposition finite element/finite difference (FE/FD) method are presented. The analyses are developed for a semi-discrete finite element scheme for time-dependent Maxwell’s equations.
Mohammad Asadzadeh, Larisa Beilina
doaj   +1 more source

On Matrix Factorization and Scheduling for Finite-Time Average-Consensus [PDF]

open access: yes, 2010
We study the problem of communication scheduling for finite-time average-consensus in arbitrary connected networks. Viewing this consensus problem as a factorization of 1/n 11T by network-admissible families of matrices, we prove the existence of finite
Ko, Chih-Kai
core   +1 more source

Continuous Adaptive Finite Reaching Time Control and Second-Order Sliding modes [PDF]

open access: yes, 2013
This paper focuses on the design of adaptive finite reaching time control for first- and second-order dynamic systems with perturbation terms given in a regressive form. The uncertainties considered here are assumed to be bounded with unknown bounds. The
Spurgeon, Sarah K.   +3 more
core   +1 more source

Finite-time extended state observer-based area keeping and heading control for turret-moored vessels with uncertainties and unavailable velocities

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2022
This paper investigates the finite-time extended state observer-based Dynamic Positioning (DP) control of turret-moored vessels with unavailable velocities and uncertainties.
Yulong Tuo, Shasha Wang, Chen Guo
doaj   +1 more source

On the convergence of adaptive nonconforming finite element methods for a class of convex variational problems [PDF]

open access: yes, 2011
We formulate and analyze an adaptive nonconforming finite element method for the solution of convex variational problems. The class of minimization problems we admit includes highly singular problems for which no Euler–Lagrange equation (or inequality ...
Christoph Ortner   +3 more
core   +1 more source

Finite element multistep multideriavative schemes for parabolic equations [PDF]

open access: yes, 1976
The linear, homogeneous, parabolic equation is solved by applying finite element discretizations in space and A0 —stable, linear multistep, multiderivative (L.M.S.D.) methods in time. Such schemes are unconditionally stable. An error analysis establishes
Moore, P
core   +6 more sources

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