Simulation of Electro-pneumatic Braking System Response in Long Trains
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Date
2014-09-07
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Addis Ababa University
Abstract
Electro-pneumatic braking system (epbs) components can be frequently used in any
commercial automobile vehicles regardless of their size of outputs. Their difference is in the
amount of longitudinal force developed inside these components according to the size of the
automobile. The simulation of electro-pneumatic brake systems has of great importance in
order to understand the fluid dynamics inside these brake components.
The electro pneumatic braking system is applicable in any automobiles. But this particular
system is applicable in a train vehicle (coach). This paper presents a computational model
based simulation of electro-pneumatic braking system used for prediction of fluid dynamic
behavior inside the systems and to compare the simulated results with the pneumatic one.
The system is modeled and simulated in modeling and simulation environment called
MATLAB SIMULINK. Considering the complexity of the electro pneumatic braking system
components and the related phenomena of fluid motion inside these components, special
models have been elaborated using flow chart algorithm.
The simulation result shows good agreement with measurement data found from different
literature reviews but have a big difference in time response with the pneumatic braking
system. The comparative measurement data (experimental data) found from different
literature reviews and simulation result found from this simulation study confirms that the
system is modeled correctly and this simulating tool can be effectively used in design,
research and development of electro pneumatic braking systems.
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Keywords
Electro-Pneumatic Braking System, Long Trains, Simulation