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Estimation of Lateral Grip Margin Based on Self-aligning Torque for Vehicle Dynamics Enhancement
Technical Paper
2004-01-1070
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
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.
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Authors
- Yoshiyuki Yasui - Aisin Seiki Co., Ltd.
- Wataru Tanaka - Aisin Seiki Co., Ltd.
- Yuji Muragishi - Toyota Central R&D Labs., Inc.
- Eiichi Ono - Toyota Central R&D Labs., Inc.
- Minekazu Momiyama - Toyoda Machine Works, Ltd.
- Hiroaki Katoh - Toyoda Machine Works, Ltd.
- Hiroaki Aizawa - Advics Co., Ltd.
- Yuzo Imoto - Advics Co., Ltd.
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.Also In
SAE 2004 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V113-6; Published: 2005-07-05
Number: V113-6; Published: 2005-07-05
Vehicle Dynamics and Simulation, Steering and Suspensions on CD-ROM from the SAE 2004 World Congress
Number: SP-1881CD; Published: 2004-03-08
Number: SP-1881CD; Published: 2004-03-08
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