Technical Paper
A New Approach to Improve Steering Response Development Using Bode Diagrams
2007-11-28
2007-01-2548
Nowadays, vehicle steering development processes are mostly based on metrics which describe gains over steering wheel angle inputs. Most of these metrics are related to the yaw and lateral motion of the vehicle, for different velocities and curves situations. In practical terms, it is a correct approach, once steering feel is related to yaw motions and lateral accelerations. For example, given a certain steering wheel angle input, a higher yaw will generally provide a quicker response feel. However, there are subjective aspects related to the steering response feel that are not completely captured by traditional metrics alone, which are generally based on response gains over steering wheel inputs. This work presents a new steering evaluation plot, based in a simple maneuver (step steer) and in the sequence of the dynamic events that follow, which showed to be effective on providing additional analysis data that captures important aspects of the steering response subjective feel.