Estimation of Lateral Grip Margin Based on Self-aligning Torque for Vehicle Dynamics Enhancement

2004-01-1070

03/08/2004

Event
SAE 2004 World Congress & Exhibition
Authors Abstract
Content
It is well known that the self-aligning torque decreases before lateral force is saturated. Focusing on this self-aligning torque change, an estimation method has been developed to detect the friction condition between steered wheels and road surface before the lateral force reaches the friction limit. The lateral grip margin (LGM) is defined based on the self-aligning torque change, which is obtained using the EPS torque and motor current information. The LGM is theoretically analyzed based on the tire model and experimentally verified through the full-scale vehicle test. Moreover, the estimated LGM is applied for the chassis control systems to improve the vehicle dynamics performance.
Meta TagsDetails
DOI
https://doi.org/10.4271/2004-01-1070
Pages
8
Citation
Yasui, Y., Tanaka, W., Muragishi, Y., Ono, E. et al., "Estimation of Lateral Grip Margin Based on Self-aligning Torque for Vehicle Dynamics Enhancement," SAE Technical Paper 2004-01-1070, 2004, https://doi.org/10.4271/2004-01-1070.
Additional Details
Publisher
Published
Mar 8, 2004
Product Code
2004-01-1070
Content Type
Technical Paper
Language
English