Results 141 to 150 of about 507 (175)

A feasibility study of an aerodynamic control for a high speed pantograph

2007 IEEE/ASME international conference on advanced intelligent mechatronics, 2007
In the present paper an alternative way to apply active control on a high speed train pantograph is proposed. The control is based on two main concepts: the use the incident air flow on the pantograph as power source, and the application of the control force directly on the collector, i.e.
COLLINA, ANDREA, FACCHINETTI, ALAN, RESTA, FERRUCCIO   +2 more
openaire   +1 more source

Physically based modelling of a high-speed pantograph

2014
Pantographs are the connecting element between the train and the current-carrying contact wire and are so far the limiting factor in the attempt of reaching higher speeds in the railway industry. Their task is to establish a reliable permanent connection between the train and the contact wire while keeping the needed contact force as low as possible to
openaire   +1 more source

Research of the active control for high-speed train pantograph

2008 IEEE Conference on Cybernetics and Intelligent Systems, 2008
One of the main problems which limit the trains run at a higher speed is the vibration of the contact force between the pantograph and the catenary. In this paper, three kinds of stiffness curves are fitted by using the non-linear least square method and a unified fitting formula is presented. Based on this, a 3-DOF time-variant model of the pantograph
null Wang Shudong, null Guo Jingbo, null Gao Guosheng   +2 more
openaire   +1 more source

Research on the Heat Transfer of High-Speed Railway Pantographs

Applied Mechanics and Materials, 2014
In the pantograph-catenary system of electric railroads, there is friction heat between high-speed moving pantograph sliders and the contact wires, leading to a temperature increase on the contact surface. On the contact surface under the current collecting conditions, there are also contact resistance heat and arc heat produced by the current effect ...
Jie Ruan, Zhi En Liu, Fu Wu Yan, Hong Mei Li   +3 more
openaire   +1 more source

The French High Speed Train (TGV) Pantograph's Aeroacoustics

SAE Technical Paper Series, 1997
<div class="htmlview paragraph">After 300 kph the aerodynamics noise emitted by the French High Speed Train T.G.V. (Train Grande Vitesse) becomes preponderant. The pantograph and roof environment located in the top of the rear power car are one of the sources which participate in the overall noise of the train. Investigations in an anechoi'c wind
A. Fages, C. Bertrand
openaire   +1 more source

Design and Experimental Results of an Active Suspension System for a High-Speed Pantograph

IEEE/ASME Transactions on Mechatronics, 2008
In high-speed trains, current collection from the overhead line is assured by an articulated suspension system called the dasiadasiapantographpsilapsila Contact wires and overhead line are flexible systems that are subjected to oscillations that have to be compensated for a satisfactory quality of current collection. In high-speed railway applications,
ALLOTTA, BENEDETTO, PUGI, LUCA, BARTOLINI, FABIO   +2 more
openaire   +1 more source

Output–Feedback Regulation of the Contact-Force in High-Speed Train Pantographs

Journal of Dynamic Systems, Measurement, and Control, 2004
One of the main problems in high-speed train transportation systems is to counteract the fast variations of the contact force between the catenary and the pantograph collector end. The variation of the catenary equivalent stiffness, due to the suspending system, originates mechanical oscillations whose frequency and magnitude are larger and larger as ...
PISANO, ALESSANDRO, USAI, ELIO
openaire   +1 more source

A robust control of contact force of pantograph-catenary for the high-speed train

2013 European Control Conference (ECC), 2013
In this paper, a simplified model to three degree of freedom (3-DOF) of the pantograph-catenary (PAC) system is represented. A robust control of contact force between the pantograph and the catenary for the high-speed trains using the fuzzy sliding mode controller and the additional compensator is presented.
Nassim Mokrani, Ahmed Rachid
openaire   +1 more source

Improvement of a pantograph for high-speed trains

1980
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1980. ; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. ; Includes bibliographical references. ; by Li-Moon Wann. ; M.S.
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Simulation and Design of a High Speed railway Pantograph for Trenitalia S.p.A.

2006
The paper deals with the design process undertaken for a proposed high speed pantograph oriented to the interoperability, developed in cooperation among Trenitalia SpA (Italian railway stock holder and manager) and three Italian universities. Aim of the work is the development of an optimized passive pantograph, in which the control of the contact ...
E. MINGOZZI, A. AMORE, A. DE IORIO, G. DIANA, TONI, PAOLO   +4 more
openaire   +3 more sources