CUED Publications database

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

Tagesson, K and Cole, D (2016) Advanced emergency braking under split friction conditions and the influence of a destabilising steering wheel torque. Vehicle System Dynamics.

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: heavy vehicles braking steering steering torque driver model neuromuscular
Subjects: UNSPECIFIED
Divisions: Div C > Applied Mechanics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:21
Last Modified: 19 Sep 2017 01:33
DOI: