| ANALYSIS OF STEERING RETURNABILITY AND COMPENSATION
LOGIC DEVELOPMET IN LIMIT CORNERING CONDITION |
| Han Seung Lee, Dae Suk Jung, Jae Kil Lee |
| Hyundai Motors Company |
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| ABSTRACT |
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This paper describes steering returnability by analyzing forces applied to kingpin axis in limit cornering
conditions. The steering returnability is related to forces applied to kingpin axis. These forces are classified by its source: Tire
force and steering force. Tire force is generated from tire such as longitudinal, lateral, vertical force, and residual self-aligning
torque. Steering force consists of friction force and assist force. These forces are vectorized by suspension geometry and
calculated with respect to kingpin axis. The simulation results are compared with measurement data and verifies that steering
returnability can be formulated by tire forces and steering forces. Using these relations, this paper proposes new steering
control logics at limit driving conditions. This logic is verified by simulation model to check performance and confirmed in
various test conditions for robustness. |
| Key Words:
Steering system, Suspension system, Kinematics mechanism, Geometry, Returnability, Kingpin axis |
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Corresponding Author.
Jae Kil Lee , Email. 
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