Steering Redundancy for Self-Driving Vehicles using Differential Braking
Artikel i vetenskaplig tidskrift, 2018

This paper describes how differential braking can be used to turn a vehicle in the context of providing fail-operational control for self-driving vehicles. Two vehicle models are developed with differential input. The models are used to explain the bounds of curvature that differential braking provides and they are then validated with measurements in a test vehicle. Particular focus is paid on wheel suspension effects that significantly influence the obtained curvature. The vehicle behaviour and its limitations due to wheel suspension effects are, owing to the vehicle models, defined and explained. Finally, a model-based controller is developed to control the vehicle curvature during a fault by differential braking. The controller is designed to compensate for wheel angle disturbance that is likely to occur during the control event.

vehicle control

scrub radius

differential braking

redundant steering

autonomous vehicles

Författare

Mats Jonasson

Kungliga Tekniska Högskolan (KTH)

Volvo Cars

Mikael Thor

Volvo Cars

Vehicle System Dynamics

0042-3114 (ISSN)

Vol. 56 5 791-809

Ämneskategorier

Farkostteknik

Robotteknik och automation

Reglerteknik

DOI

10.1080/00423114.2017.1356929

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Senast uppdaterat

2021-07-25