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Advanced emergency braking under split friction conditions and the influence of a destabilising steering wheel torque

Kristoffer Tagesson (Institutionen för tillämpad mekanik, Fordonsteknik och autonoma system) ; D. Cole
Vehicle System Dynamics (0042-3114). Vol. 55 (2017), 7, p. 970-994.
[Artikel, refereegranskad vetenskaplig]

The steering system in most heavy trucks is such that it causes a destabilising steering wheel torque when braking on split friction, that is, different friction levels on the two sides of the vehicle. Moreover, advanced emergency braking systems are now mandatory in most heavy trucks, making vehicle-induced split friction braking possible. This imposes higher demands on understanding how the destabilising steering wheel torque affects the driver, which is the focus here. Firstly, an experiment has been carried out involving 24 subjects all driving a truck where automatic split friction braking was emulated. Secondly, an existing driver–vehicle model has been adapted and implemented to improve understanding of the observed outcome. A common conclusion drawn, after analysing results, is that the destabilising steering wheel torque only has a small effect on the motion of the vehicle. The underlying reason is a relatively slow ramp up of the disturbance in comparison to the observed cognitive delay amongst subjects; also the magnitude is low and initially suppressed by passive driver properties.

Nyckelord: braking, driver model, heavy vehicles, neuromuscular, steering, steering torque



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Denna post skapades 2017-05-03. Senast ändrad 2017-05-17.
CPL Pubid: 249070

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Fordonsteknik och autonoma system (2010-2017)

Ämnesområden

Transport
Infrastrukturteknik
Farkostteknik
Tribologi

Chalmers infrastruktur

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