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Full-scale testing of a novel slip control braking system for heavy vehicles

Leon Henderson (Institutionen för tillämpad mekanik, Fordonsteknik och autonoma system) ; David Cebon
Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering (0954-4070). (2015)
[Artikel, refereegranskad vetenskaplig]

This paper summarises the measured emergency braking performance of a tri-axle heavy goods vehicle semitrailer fitted with a novel pneumatic slip control braking system developed by the Cambridge Vehicle Dynamics Consortium. Straight-line braking tests were carried out from 40 km/h in order to compare a commercially electro-pneumatic available anti-lock braking system and the Cambridge Vehicle Dynamics Consortium system, which has bi-stable valves coupled with a sliding-mode slip controller. On average, the Cambridge Vehicle Dynamics Consortium system reduced the stopping distance and the air use by 15% and 22% respectively compared with those for the conventional anti-lock braking system. The most significant improvements were seen on a wet basalt-tile surface (with similar friction properties to ice) where the stopping distance and the air use were improved by 17% and 30% respectively. A third performance metric, namely the mean absolute slip error, is introduced to quantify the ability of each braking system to track a wheel slip demand. Using this metric, the bi-stable valve system is shown to improve the wheel slip demand tracking by 62% compared with that of the conventional anti-lock braking system. This improvement potentially allows more accurate control of the wheel forces during extreme manoeuvres, providing scope for the future development of advanced stability control systems.

Nyckelord: Anti-lock braking system, ABS, slip control, pneumatic braking system, heavy vehicles, HGVs, brake system design



Denna post skapades 2016-02-15. Senast ändrad 2016-02-15.
CPL Pubid: 232057

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Fordonsteknik och autonoma system

Ämnesområden

Farkostteknik

Chalmers infrastruktur