Vehicle Stability Criterion Research Based on Phase Plane Method 2017-01-1560
In this paper, a novel method is proposed to establish the vehicle yaw stability criterion based on the sideslip angle-yaw rate (β-r) phase plane method. First, nonlinear two degrees of freedom vehicle analysis model is established by adopting the Magic Formula of nonlinear tire model. Then, according to the model in the Matlab/Simulink environment, the β-r phase plane is gained. Emphatically, the effects of different driving conditions (front wheels steering angle, road adhesion coefficient and speed) on the stability boundaries of the phase plane are analyzed. Through a large number of simulation analysis, results show that there are two types of phase plane: curve stability region and diamond stability region, and the judgment method of the vehicle stability domain type under different driving conditions is solved. Finally, different conditions of stability boundary plane database look-up tables are set up, besides, the effects of different conditions on the stability boundary’s relevant design parameters are investigated. This research provides a theoretical basis for the intervention of the stability control system algorithms.
Citation: Liu, W., Xiong, L., Leng, B., Meng, H. et al., "Vehicle Stability Criterion Research Based on Phase Plane Method," SAE Technical Paper 2017-01-1560, 2017, https://doi.org/10.4271/2017-01-1560. Download Citation
Author(s):
Wei Liu, Lu Xiong, Bo Leng, Haolan Meng, Renxie Zhang
Affiliated:
Tongji University
Pages: 9
Event:
WCX™ 17: SAE World Congress Experience
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Stability control
Mathematical models
Control systems
CAD, CAM, and CAE
Simulation and modeling
Slip
Research and development
Wheels
Yaw
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