Magnetic Braking System for Automotives
01 Jan 2018-pp 163-172
TL;DR: Design implementation of an automotive electromagnetic brake has been discussed, so as to replace already existing complicated braking systems with a relatively simple electromagnetic system that is most suited for hybrid vehicles and for four-wheel automotive systems.
Abstract: Background: The existing braking systems suffer from a lot of drawbacks like inferior time-delay response and noise due to mechanical parts, wear and tear due to friction and contact, low performance and bulky size. Methods/Statistical analysis: In this paper, design implementation of an automotive electromagnetic brake has been discussed, so as to replace already existing complicated braking systems with a relatively simple electromagnetic system. In the proposed system, the mechanical parts of the braking systems are completely replaced by the electronic parts, where a magnet is attached to the rim of the tyre of the vehicle and an electromagnet is placed parallel to the face of the rim of the tyre. The motion of the vehicle is controlled by controlling the supply to the electromagnet. As the electromagnet is energised, it acts like a magnet and tries to lock with the magnet on the rim of the tyre. As a result, the tyre stops rotating and the braking action occurs. The working is similar to that of an antilock braking system. Findings: A study was conducted on a prototype model analogous to the real-time system, and the plausibility of the work was observed. The problems and the constraints based on the real-time scenario were accounted for and thus optimisation method is also suggested. Application/Improvements: The proposed work is most suited for hybrid vehicles and for four-wheel automotive systems. Since only an analogous prototype was implemented and researched upon, the future works involve implementation of real-time system and conduct its analysis.
TL;DR: In this article, the authors proposed an automotive magnetorheological (MR) brake, which consists of multiple rotating disks immersed in a MR fluid and an enclosed electromagnet, and a finite element analysis is performed to analyze the resulting magnetic circuit and heat distribution within the MR brake configuration.
TL;DR: In this article, a contactless eddy current brake (ECB) is developed to take the superior advantages of fast anti-lock braking to the conventional hydraulic brake systems, which is performed by using an approximate theoretical model and the model is modified through experiments to have a more reliable result.
TL;DR: In this article, an approximate theoretical model is derived for the behavior of an eddy current disc brake in the low-speed zone, which is used to obtain a polynomial state-affine behavior model for such a process.
TL;DR: In this paper, the use of AC magnetic fields with fixed and variable frequencies in different waveforms is investigated at both low and high speeds, and the frequency of the applied field is optimized using genetic algorithms on a generic ECB configuration.
TL;DR: In this article, a finite element model is developed to analyze the phenomena of magnetic flux density when air gap and materials of track are varied, and verification shows the predicted magnetic flux is within acceptable range with the measured value.
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