Improving directional stability control in a heavy truck by combining braking and steering action
Conference contribution, 2016

The introduction of electronics in heavy vehicle steering systems has enabled active steering torque support. As steering is an effective way of escaping directional instability and brakes are fast and decoupled from the driver a combination of controlled steering and braking would be beneficial when performing directional stability control. A method is therefore proposed for this, based on control allocation. The method is unique in that it uses combined quadratic lateral and longitudinal tyre constraints computed in real-time, which has the potential of producing a higher corrective yaw moment than the commonly used approach with linear constraints, and that it can be adapted to any heavy vehicle combination. The method has been tested and compared to a standard stability control system in three different manoeuvres using a heavy solo tractor unit on a frozen lake. The measured deviation from the intended path was observed to reduce up to several meters with the new method. Also driver rating improved.

Braking

Electronic Stability Control

Heavy Vehicles

Steering

Control Allocation

Author

Kristoffer K D Tagesson

Chalmers, Applied Mechanics, Vehicle Engineering and Autonomous Systems

Björn Eriksson

Johan Hultén

Jochen Pohl

Leo Laine

Chalmers, Applied Mechanics

Chalmers, Applied Mechanics, Vehicle Engineering and Autonomous Systems

Bengt J H Jacobson

Chalmers, Applied Mechanics, Vehicle Engineering and Autonomous Systems

International Symposium on Heavy Vehicle Transport Technology (HVTT14)

Areas of Advance

Transport

Subject Categories

Vehicle Engineering

More information

Created

10/7/2017