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A Diagnostic System for Air Brakes in Commercial Vehicles | IEEE Journals & Magazine | IEEE Xplore

A Diagnostic System for Air Brakes in Commercial Vehicles


Abstract:

The safe operation of vehicles on roads depends, among other things, on a properly functioning brake system. Air brake systems are widely used in commercial vehicles such...Show More

Abstract:

The safe operation of vehicles on roads depends, among other things, on a properly functioning brake system. Air brake systems are widely used in commercial vehicles such as trucks, tractor-trailers, and buses. In these brake systems, compressed air is used as the energy transmitting medium to actuate the foundation brakes mounted on the axles. In this paper, a model-based diagnostic system for air brakes is presented. This diagnostic system is based on a nonlinear model for predicting the pressure transients in the brake chamber that correlates the brake chamber pressure to the treadle valve (brake application valve) plunger displacement and the pressure of the air supplied to the brake system. Leaks and "out-of-adjustment" of push rods are two prominent defects that affect the performance of the air brake system. Diagnostic schemes that will monitor the brake system for these defects will be presented and corroborated with experimental data obtained from the brake testing facility
Published in: IEEE Transactions on Intelligent Transportation Systems ( Volume: 7, Issue: 3, September 2006)
Page(s): 360 - 376
Date of Publication: 06 September 2006

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