Results 141 to 150 of about 595 (180)

An Antilock-Braking Algorithm for an Eddy-Current-Based Brake-By-Wire System

IEEE Transactions on Vehicular Technology, 2007
This paper presents a nonlinear sliding-mode-type controller for slip regulation in a braking event for an electromagnetic brake-by-wire (BBW)-system-equipped automobile. The electromagnetic BBW system under consideration consists of a set of eddy current brakes (ECBs) attached to the automobile wheels.
Sohel Anwar, Bing Zheng
openaire   +1 more source

The study on the measuring method of the eddy current on the eddy current brake

9th International Conference on Electrical Machines and Drives, 1999
It is important to analyse the characteristic of the flux density and eddy current on the inner part of the electric machine in order to raise the efficiency of the machine. In general, characteristics of the machines are investigated using the numerical analysis.
openaire   +1 more source

Measuring method of the magnetic field on an eddy current brake

IEEE Transactions on Magnetics, 1999
It is important to analyze the characteristics of magnetic flux and eddy current on the inner part of an electric machine in order to raise the efficiency of the machine. In general, characteristics of those are investigated using numerical analysis. In this study, we present a novel measuring method of eddy currents on the surface of the sheet iron ...
Y. Um, S. Torii, D. Ebihara, I. Sanjo, Y. Tani   +4 more
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Analysis of eddy-current brakes for high speed railway

IEEE Transactions on Magnetics, 1998
The analysis of eddy-current brakes for a high-speed railway is described that shows the operational characteristics of the brake as function of the train speed up to 300 km/hr and of the DC magnetizing current of magnetic poles. Braking forces are generated by employing a DC excitation field for the poles moving 7 mm above the rails.
null Pei-Jen Wang, null Sheng-Jiung Chiueh   +1 more
openaire   +1 more source

An Alternative Approach for Calculation of Braking Force of an Eddy-Current Brake

IEEE Transactions on Magnetics, 2009
We have analyzed an eddy-current brake (ECB), using calculations based on the Fourier transform method. Here, we compare our results with test results and numerical results of the finite-element code ANSYS 11.0. We use our model to study the influence of certain design parameters on the torque-speed characteristics.
R. K. Srivastava, S. Kumar
openaire   +1 more source

Investigation on Eddy Current Braking Systems – A Review

Applied Mechanics and Materials, 2014
The changing magnetic field will induce eddy currents in the conductor. These currents will dissipate energy in the conductor and generate drag force. It is found that Aluminium is the best material as conductor compared to Copper and Zinc. Also, it is found that the larger thickness of disc, more number of turns of electromagnet and higher electrical ...
G.L. Anantha Krishna, K.M. Sathish Kumar
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Eddy current brake with two pole pairs

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2009
PurposeThe purpose of this paper is to derive a force‐velocity characteristic for an eddy current brake with minor computational effort.Design/methodology/approachThe speed range is split into two domains. While in the low‐speed domain it is possible to achieve a closed form expression for the force‐velocity characteristic in the high‐speed region ...
Eckhard Baum, Stefan Eberhardt
openaire   +1 more source

An analytical dynamic model of eddy-current brakes

IEMDC 2001. IEEE International Electric Machines and Drives Conference (Cat. No.01EX485), 2002
This paper examines eddy-current brakes. Our aim is to model the brake and estimate its braking power. We focused on a static model, in which the flux density distribution on the eddy current surface was calculated using finite element methods. Next, we derived a dynamic model whose eddy currents were computed by means of an analytical expression.
A. Lesobre, A.H.B. Ahmedl, D. Drecq
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Eddy Current Brake Control for Test Cycles Simulation

Design, Application, Performance and Emissions of Modern Internal Combustion Engine Systems and Components, 2003
On-vehicle (rolls dynamometer or road) tests are usually more expensive and time-consuming than test bench ones. Furthermore, sometimes results would be useful during vehicles design phase. The paper aim is to present a methodology that allows simulating the vehicle on an engine test cell, by properly controlling the bench actuators.
openaire   +2 more sources

Analysis of eddy-current brakes with nonmagnetic rotors

Proceedings of the Institution of Electrical Engineers, 1977
The field distribution when a thin conducting sheet moves with constant velocity between two rectangular and infinitely permeable pole pieces of an electromagnet is obtained by conformal mapping, after reduction of the problem to two dimensions. This result is used in predicting the force/speed and flux/speed characteristics of eddy-current brakes with
K. Venkataratnam, D. Ramachandra Raju
openaire   +1 more source