Results 41 to 50 of about 2,976 (212)

Stability results for impulsive pantograph equations

open access: yesApplied Mathematics Letters, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Guan, Kaizhong, Luo, Zhiwei
openaire   +2 more sources

A Dynamic Model for the Study and Simulation of the Pantograph–Rigid Catenary Interaction with an Overlapping Span

open access: yesApplied Sciences, 2021
In this paper, the authors present a mathematical and engineering model to optimally calculate the dynamic equation on the pantograph–catenary interaction when considering a rigid catenary with an overlapping span.
Jesús Benet   +4 more
doaj   +1 more source

A Study of Generalized Hybrid Discrete Pantograph Equation via Hilfer Fractional Operator

open access: yesFractal and Fractional, 2022
Pantograph, a device in which an electric current is collected from overhead contact wires, is introduced to increase the speed of trains or trams. The work aims to study the stability properties of the nonlinear fractional order generalized pantograph ...
Wafa Shammakh   +3 more
doaj   +1 more source

A New Active Control Strategy for Pantograph in High-Speed Electrified Railways Based on Multi-Objective Robust Control

open access: yesIEEE Access, 2019
In high-speed railways, the quality of current collection of high-speed train is directly determined by the contact force between the contact wire of the catenary and the registration strip of the pantograph.
Jing Zhang   +4 more
doaj   +1 more source

An investigation into the aerodynamic characteristics of catenary contact wires in a cross-wind [PDF]

open access: yes, 2001
An experimental analysis of the aerodynamic characteristics of catenary contact wires is presented. The aerodynamic data obtained were used to calculate the Glauert-Den Harthog criterion for one-dimensional galloping.
Scanlon, T.J., Stickland, M.T.
core   +1 more source

Discontinuous Galerkin Methods for Multi-Pantograph Delay Differential Equations

open access: yesAdvances in Applied Mathematics and Mechanics, 2020
Summary: In this paper, the discontinuous Galerkin method is applied to solve the multi-pantograph delay differential equations. We analyze the optimal global convergence and local superconvergence for smooth solutions under uniform meshes. Due to the initial singularity of the forcing term \(f\), solutions of multi-pantograph delay differential ...
Jiang, Kun, Huang, Qiumei, Xu, Xiuxiu
openaire   +2 more sources

The Effect of High-Frequency Parametric Excitation on a Stochastically Driven Pantograph-Catenary System

open access: yesShock and Vibration, 2014
In high-speed electric trains, a pantograph is mounted on the roof of the train to collect power through contact with an overhead catenary wire. The effect of fast harmonic and parametric excitation on a stochastically driven pantograph-catenary system ...
R. H. Huan, W. Q. Zhu, F. Ma, Z. H. Liu
doaj   +1 more source

A field programmable gate array based modular motion control platform [PDF]

open access: yes, 2011
The expectations from motion control systems have been rising day by day. As the systems become more complex, conventional motion control systems can not achieve to meet all the specifications with optimized results.
Koc, Osman   +5 more
core   +1 more source

New Fractional Derivative Expression of the Shifted Third-Kind Chebyshev Polynomials: Application to a Type of Nonlinear Fractional Pantograph Differential Equations

open access: yesJournal of Function Spaces, 2022
The main goal of this paper is to develop a new formula of the fractional derivatives of the shifted Chebyshev polynomials of the third kind. This new formula expresses approximately the fractional derivatives of these polynomials in the Caputo sense in ...
Y. H. Youssri   +2 more
doaj   +1 more source

Numerical Approach for Solving Fractional Pantograph Equation

open access: yesInternational Journal of Computer Applications, 2015
this article, we have investigate a Taylor collocation method, which is based on collocation method for solving fractional pantograph equation. This method is based on first taking the truncated fractional Taylor expansions of the solution function in the mathematical model and then substituting their matrix forms into the equation.
Mustafa Gülsu   +2 more
openaire   +1 more source

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