Abstract
This paper describes the coupling between a three degrees of freedom steering-system model and a multi-body truck model. The steering-system model includes the king-pin geometry to provide the correct feedback torque from the road to the steering-system. The steering-system model is combined with a validated tractor semi-trailer model. An instrumented tractor semi-trailer has been tested on a proving ground and the steering-wheel torque, pitman-arm angle, king-pin angles and drag-link force have been measured during steady-state cornering, a step steer input and a sinusoidal steering input. It is shown that the steering-system model is able to accurately predict the steering-wheel torque for all tests and the vehicle model is accurate for vehicle motions up to a frequency where the lateral acceleration gain is minimum. Even though the vehicle response is not accurate above this frequency, the steering-wheel torque is still represented accurately.
| Original language | English |
|---|---|
| Pages (from-to) | 86-107 |
| Number of pages | 22 |
| Journal | Vehicle System Dynamics |
| Volume | 57 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2 Jan 2019 |
Keywords
- Commercial vehicle
- hydraulic power-steering
- parametrisation
- steering-system
- steering-wheel torque prediction
- wheatstone bridge